A high-speed transmitter and serial data transmitter circuit

Abstract

The present application discloses a high-speed transmitter and a serial data transmitter circuit, which relates to the technical field of signal transmission circuit design, wherein the high-speed transmitter includes a signal transmission unit, and the signal transmission unit includes: a signal transceiver module, which is used to transmit an input target signal; a first power tube, whose input end is used to receive an input target voltage, and whose output end is connected to the power supply end of the signal transceiver module. The technical solution of the present application is to set a first power tube in the signal transmission unit, and control the first power tube to power the signal transceiver module according to the target voltage input at the input end of the first power tube, and at the same time, combined with the characteristic of the power tube having a lower on-resistance, so that the setting of the first power tube can reduce the voltage drop at the power supply end of the signal transceiver module, thereby being able to meet the normal supply voltage requirements during high-speed serial link transmission.

Description

Technical Field

[0001] The present application relates to the technical field of signal transmission circuit design, and in particular to a high-speed transmitter and a serial data transmitter circuit. Background Art

[0002] Hstx (High Speed ​​Transmitter) is a high-speed transmitter, which is an important device widely used in the fields of communication and data transmission. It has the characteristics of high speed, high stability and versatility.

[0003] The high-speed transmitter provided in the related art receives parallel data from a digital system. The data is converted into a serial data stream through a series of processes inside the high-speed transmitter so as to be transmitted on a high-speed serial link. A serializer is usually used to achieve this conversion. The serializer consists of a plurality of shift registers, each of which corresponds to a data bit. Under the control of a clock signal, the shift register outputs the data bit by bit in sequence to form a serial data stream.

[0004] However, in the above-mentioned related technologies, when the serial data stream is transmitted based on the high-speed serial link, since the power supply ends of each transmission unit of the high-speed serial link are relatively dispersed, the online voltage drop of the high-speed serial link during voltage supply will increase, so that the normal voltage supply demand of the high-speed serial link during transmission cannot be met normally. Summary of the invention

[0005] To solve the above technical problems, embodiments of the present application provide a high-speed transmitter and a serial data transmitter circuit.

[0006] According to one aspect of an embodiment of the present application, a high-speed transmitter is provided, including a signal transmission unit, wherein the signal transmission unit includes: a signal transceiver module for transmitting an input target signal; a first power tube, whose input end is used to receive an input target voltage, and whose output end is connected to a power supply end of the signal transceiver module.

[0007] In some embodiments of the present application, based on the above technical solution, there are multiple signal transmission units, and the multiple signal transmission units are connected in series to form a transmission link.

[0008] In some embodiments of the present application, based on the above technical solution, the high-speed transmitter also includes a first operational amplifier circuit and a second power tube; the output end of the first operational amplifier circuit is respectively connected to the input end of the second power tube and the input end of the first power tube, and the output end of the second power tube is connected to the output end of the first power tube; the input end of the first operational amplifier circuit is used to receive an input reference voltage to convert the reference voltage to obtain the target voltage.

[0009] In some embodiments of the present application, based on the above technical solution, the first operational amplifier circuit includes a first amplifier, the first amplifier includes a non-inverting input terminal and an inverting input terminal; the non-inverting input terminal of the first amplifier is used to receive the reference voltage; the inverting input terminal of the first amplifier is connected to the output terminal of the second power tube.

[0010] In some embodiments of the present application, based on the above technical solution, the high-speed transmitter also includes a first voltage stabilizing capacitor; one end of the first voltage stabilizing capacitor is connected to the output end of the first operational amplifier circuit, and the other end of the first voltage stabilizing capacitor is grounded.

[0011] In some embodiments of the present application, based on the above technical solution, the high-speed transmitter also includes a first voltage-stabilizing resistor; one end of the first voltage-stabilizing resistor is connected to the output end of the second power tube, and the other end of the first voltage-stabilizing resistor is grounded.

[0012] In some embodiments of the present application, based on the above technical solution, the signal transmission unit also includes a second operational amplifier circuit; the output end of the second operational amplifier circuit is connected to the input end of the first power tube; the input end of the second operational amplifier circuit is used to receive an input reference voltage to convert the reference voltage to obtain the target voltage.

[0013] In some embodiments of the present application, based on the above technical solution, the second operational amplifier circuit includes a second amplifier, and the second amplifier includes a non-inverting input terminal and an inverting input terminal; the non-inverting input terminal of the second amplifier is used to receive the reference voltage; the inverting input terminal of the second amplifier is connected to the output terminal of the first power tube.

[0014] In some embodiments of the present application, based on the above technical solution, the signal transmission unit also includes a second voltage-stabilizing capacitor; one end of the second voltage-stabilizing capacitor is connected to the output end of the second operational amplifier circuit, and the other end of the second voltage-stabilizing capacitor is grounded.

[0015] According to another aspect of an embodiment of the present application, a serial data transmitter circuit is provided, comprising the high-speed transmitter described in the above embodiment.

[0016] In the technical solution of the embodiment of the present application, the above invention content can at least bring the following beneficial effects:

[0017] By setting a first power tube in the signal transmission unit, and controlling the first power tube to power the signal transceiver module according to the target voltage input at the input end of the first power tube, and combining the characteristic of the power tube having a lower on-resistance, setting the first power tube can reduce the voltage drop at the power supply end of the signal transceiver module, thereby meeting the normal supply voltage requirement during high-speed serial link transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall circuit structure of a signal transmission unit in a high-speed transmitter according to an exemplary embodiment of the present application.

[0020] Figure 2 A schematic diagram of a partial circuit structure of a transmission link in a high-speed transmitter according to an exemplary embodiment of the present application.

[0021] Figure 3 This is a schematic diagram of the overall circuit structure of a high-speed transmitter shown in an exemplary embodiment of the present application.

[0022] Figure 4 This is a schematic diagram of the overall circuit structure of a high-speed transmitter shown in another exemplary embodiment of the present application.

[0023] Figure 5 This is a schematic diagram of the overall circuit structure of a signal transmission unit in a high-speed transmitter showing another exemplary embodiment of the present application.

[0024] Figure 6 The present invention is a schematic diagram of an overall circuit structure of a signal transmission unit in a high-speed transmitter, showing another exemplary embodiment of the present application.

[0025] Figure 7 A schematic diagram of the overall circuit structure of a transmission link in a high-speed transmitter is shown as another exemplary embodiment of the present application.

[0026] The reference numerals in the accompanying drawings are explained as follows:

[0027] 100, signal transmission unit; 110, signal transceiver module; 120, first power tube; 130, second operational amplifier circuit; 1301, second amplifier; 1302, second voltage-stabilizing capacitor; 1303, second voltage-stabilizing resistor; 200, transmission link; 300, first operational amplifier circuit; 310, first amplifier; 320, first voltage-stabilizing capacitor; 330, first voltage-stabilizing resistor; 400, second power tube;

[0028] In the figure, vctrl represents the target voltage, and can also be represented as the voltage signal at the output end of the first operational amplifier circuit or the second operational amplifier circuit; vcomm represents the voltage signal at the output end of the first power tube or the voltage signal at the output end of the second power tube; Vp represents the power supply voltage of each electronic component. DETAILED DESCRIPTION

[0029] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0030] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0031] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0032] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0033] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0034] Figure 1 FIG. 1 is a schematic diagram of the overall circuit structure of a signal transmission unit in a high-speed transmitter according to an exemplary embodiment of the present application. Figure 1As shown, the high-speed transmitter provided by the present application may include a signal transmission unit 100 .

[0035] A signal transceiver module 110 for transmitting an input target signal is disposed inside the signal transmission unit 100 .

[0036] For example, a high-speed serial data transmission link is provided in the high-speed serial data transmitter, and the signal transmission unit 100 represents a transmission unit in the high-speed serial data transmission link, such as an optical fiber, a coaxial cable or a twisted pair, and transmits a differential signal through the high-speed serial link.

[0037] The signal transceiver module 110 may further include a clock recovery circuit, which is responsible for extracting a clock signal of the transmitting end from the received serial data stream and synchronizing it to a clock domain of the receiving end.

[0038] There are many ways to implement the clock recovery circuit, such as a clock recovery circuit based on a phase locked loop (PLL), a clock recovery circuit based on a delay line (DLL), etc.

[0039] Based on the above clock recovery circuit, it can be ensured that the data transmission between the transmitting end and the receiving end can be carried out according to the predetermined timing.

[0040] The signal transmission unit 100 provided in the present application may include a first power tube 120 .

[0041] Specifically, the first power tube 120 may be an NMOS power tube or a PMOS power tube, and based on the specific selection of the first power tube 120 , the connection of the circuit is adaptively adjusted.

[0042] The first power tube 120 of the present application is disposed inside the signal transmission unit 100 .

[0043] Among them, the input end of the first power tube 120 is used to receive the input target voltage; the output end of the first power tube 120 is connected to the power supply interface of the signal transceiver module 110 to power the signal transceiver module 110 after the target voltage is input at the input end of the first power tube 120.

[0044] Taking NMOS power tube as an example, NMOS power tube has the advantages of small on-resistance, low switching loss, simple structure, low manufacturing cost, high integration, and easy integration with other components. NMOS power tube has a fast switching speed and is suitable for high-frequency applications. Due to its small on-resistance, it has low switching loss and operating temperature.

[0045] Further exemplary description is given in combination with an NMOS power tube in the prior art, for example, an NMOS power tube with a signal of HKTD90N03, which is an existing low-power NMOS product with very excellent electrical characteristics. For example, if its drain-source voltage is 30V and the gate-source voltage is 20V, the continuous drain current can reach 90A, and the drain-source on-resistance is only 0.0052Ω.

[0046] Through the above implementation, by setting the first power tube 120 in the signal transmission unit 100, and controlling the first power tube 120 to power the signal transceiver module 110 according to the target voltage input at the input end of the first power tube 120, and combining the characteristic of the power tube having a lower on-resistance, setting the first power tube 120 can reduce the voltage drop at the power supply end of the signal transceiver module 110, thereby meeting the normal supply voltage requirement during high-speed serial link transmission.

[0047] It should be noted that if there is a large voltage drop at the power supply end of the signal transceiver module 110, the output swing of the high-speed transmitter may be reduced; therefore, the first power tube 120 reduces the voltage drop at the power supply end of the signal transceiver module 110, and at the same time, the degree of reduction in the output swing of the high-speed transmitter can be reduced.

[0048] In some embodiments of the present application, based on the above embodiments, Figure 2 FIG. 1 is a schematic diagram of a partial circuit structure of a transmission link in a transmitter shown in an exemplary embodiment of the present application. Figure 2 As shown, there may be multiple signal transmission units 100, and the multiple signal transmission units 100 are serially connected to form a transmission link 200. That is, the high-speed serial data transmission link exemplified in the above embodiment.

[0049] Specifically, the transmission link 200 formed by serial connection mainly involves the data sending and receiving process, as well as related signal processing and synchronization mechanisms.

[0050] The serial transmission link 200 generally includes two parts: a transmitter and a receiver. The high-speed transmitter is responsible for converting parallel data into serial data and sending it to the transmission line, while the receiver is responsible for receiving the serial data from the transmission line and converting it back into parallel data.

[0051] At the same time, the transmission link 200 uses the clock signal provided by the phase-locked loop (PLL) to convert the low-speed parallel data into high-speed serial data. Parallel-to-serial conversion is a key step in serial communication, which ensures that the data can be transmitted one bit at a time in sequence.

[0052] On the one hand, through the above implementation, the transmission link 200 formed by serially connecting multiple signal transmission units 100 can ensure the synchronization of signals, thereby achieving efficient and reliable serial communication transmission.

[0053] On the other hand, through the above-mentioned implementation mode, when a transmission link 200 is formed by connecting multiple signal transmission units 100 in series, based on the above-mentioned embodiment, the setting of the first power tube 120 in a single signal transmission unit 100 can utilize the conduction characteristics of the power tube to reduce the voltage drop on the line. Therefore, when a transmission link 200 is formed by connecting multiple signal transmission units 100 in series, the overall voltage drop reduction effect at the power supply end of the transmission link 200 can be made more obvious, thereby better ensuring the power supply requirements of the transmission link 200 during data transmission.

[0054] In some embodiments of the present application, Figure 3 FIG. 1 is a schematic diagram of the overall circuit structure of a high-speed transmitter shown in an exemplary embodiment of the present application. Figure 3 As shown, based on the above embodiments, the high-speed transmitter may further include a first operational amplifier circuit 300 and a second power tube 400 .

[0055] The output end of the first operational amplifier circuit 300 is connected to the input end of the second power tube 400 and the input end of the first power tube 120 respectively, and the output end of the second power tube 400 is connected to the output end of the first power tube 120 .

[0056] The input terminal of the first operational amplifier circuit 300 is used to receive an input reference voltage to convert the reference voltage into a target voltage.

[0057] Specifically, the basic structure of the first operational amplifier circuit 300 may include a differential input stage, a gain stage, and an output stage, wherein the differential input stage is responsible for differentially amplifying the input signal, the gain stage further amplifies the differentially amplified signal, and the output stage converts the amplified signal into a single-ended output.

[0058] Thus, the first operational amplifier circuit 300 can amplify the input signal through its high gain characteristic. In the inverting amplifier and the non-inverting amplifier, the input signal is connected to the input terminal of the operational amplifier in different ways, and the signal is amplified and adjusted through the feedback network.

[0059] That is, after the reference voltage is input to the input end of the first operational amplifier circuit 300, it is amplified by the first operational amplifier circuit 300, and then the amplified voltage signal is input to the second power tube 400 and the first power tube 120. At the same time, the signal transmission unit 100 is powered based on the voltage signal output by the second power tube 400 and the voltage signal output by the first power tube 120.

[0060] Due to the structural characteristics of the power tube, that is, the power tube usually has a lower on-resistance, which makes it perform well in low voltage and high current situations. Lower on-resistance means less power loss in the on state, thereby improving the efficiency of the circuit.

[0061] Through the above implementation, the second power tube 400 arranged outside the signal transmission unit 100 can play a certain stabilizing role in the voltage signal input to the signal transmission unit 100, and then power the signal transmission unit 100 based on the voltage signal output by the first power tube 120 arranged internally, thereby better ensuring the voltage stability of the power supply end of the signal transmission unit 100 and reducing the reduction in the output swing of the high-speed transmitter.

[0062] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as vertical, up, down, horizontal, etc. are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0063] In addition, in the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In some embodiments of the present application, based on the above embodiments, it should be noted that the high-speed transmitter of the present application may also include only the first operational amplifier circuit 300, and be connected to the first power tube 120 inside the signal transmission unit 100 through the first operational amplifier circuit 300.

[0065] Based on this, although the voltage stabilization effect of this embodiment is somewhat different from that of the structure in which the high-speed transmitter also includes the first operational amplifier circuit 300 and the second power tube 400, this embodiment can effectively save hardware costs. At the same time, internal power supply is performed through the first power tube 120, which can also better ensure the voltage stability of the power supply end of the signal transmission unit 100 and reduce the reduction of the output swing of the high-speed transmitter.

[0066] In some embodiments of the present application, Figure 3 As shown, based on the first operational amplifier circuit 300 involved in the above embodiment, the first operational amplifier circuit 300 includes a first amplifier 310, and the first amplifier 310 includes a non-inverting input terminal and an inverting input terminal.

[0067] The non-inverting input terminal of the first amplifier 310 is used to receive a reference voltage;

[0068] An inverting input terminal of the first amplifier 310 is connected to an output terminal of the second power tube 400 .

[0069] Specifically, by connecting the output end of the second power tube 400 to the inverting input end of the first amplifier 310 , the voltage signal output by the second power tube 400 can be feedback-regulated through the inverting input end of the first amplifier 310 .

[0070] The positive end of the first operational amplifier circuit 300, that is, the non-inverting input end of the first amplifier 310, and the negative end of the first operational amplifier circuit 300, that is, the inverting input end of the first amplifier 310. During use, a reference voltage is input to the non-inverting input end of the first amplifier 310. When the output voltage increases, the voltage increase signal will be fed back to the negative end of the first operational amplifier circuit 300 through the connection between the inverting input end of the first amplifier 310 and the output end of the second power tube 400. At this time, the output of the first operational amplifier circuit 300 will achieve voltage reduction based on feedback regulation. At the same time, due to the setting of the second power tube 400, the corresponding output voltage of the second power tube 400 will also be reduced, thereby forming negative feedback regulation.

[0071] Through the above implementation, the transmission stability of the electrical signal can be increased to prevent deviation from the normal working state due to external interference or internal changes. When the circuit signal is disturbed, negative feedback will introduce a regulation effect in the opposite direction of the disturbance, thereby reducing or eliminating the impact of the disturbance on the system. By reducing or offsetting the adverse effects of internal or external changes in the system on the performance of the circuit system, the stability and performance of the circuit system are maintained. At the same time, the adaptability and robustness of the circuit system can be improved to ensure that the circuit system of the application can maintain a normal working state under various conditions.

[0072] In some embodiments of the present application, Figure 4 FIG. 1 is a schematic diagram of the overall circuit structure of a high-speed transmitter shown in another exemplary embodiment of the present application. Figure 4 As shown, based on the high-speed transmitter involved in the above embodiment, the high-speed transmitter further includes a first voltage stabilizing capacitor 320 .

[0073] One end of the first voltage-stabilizing capacitor 320 is connected to the output end of the first operational amplifier circuit 300 , and the other end of the first voltage-stabilizing capacitor 320 is grounded.

[0074] Specifically, the first voltage-stabilizing capacitor 320 is set based on the output end of the first operational amplifier circuit 300, which can filter out high-frequency noise in the output voltage signal, reduce the interference amplitude, and improve the quality of signal transmission. In a complex electronic environment, high-frequency noise and interference signals may have an adverse effect on system performance. The grounding capacitor can effectively reduce these adverse factors during use through its filtering effect.

[0075] In addition, although the grounding capacitor itself does not directly participate in the voltage stabilization process, in the circuit structure of the present application, it can indirectly play a role in voltage stabilization by cooperating with other components (such as resistors, inductors, etc.). For example, in the power input / output part, the grounding capacitor can stabilize the power supply voltage and reduce the voltage change caused by current fluctuations. In conjunction with this embodiment, the first voltage stabilization capacitor 320 is connected to the output end of the first operational amplifier circuit 300 to play a certain stabilizing role on the voltage signal output by the first operational amplifier circuit 300.

[0076] In some embodiments of the present application, Figure 4 As shown, based on the high-speed transmitter involved in the above embodiment, the high-speed transmitter further includes a first voltage-stabilizing resistor 330 .

[0077] One end of the first voltage-stabilizing resistor 330 is connected to the output end of the second power tube 400 , and the other end of the first voltage-stabilizing resistor 330 is grounded.

[0078] Specifically, the first voltage-stabilizing resistor 330 is arranged at the output end of the second power tube 400, so as to protect the second power tube 400 and other electronic components from the influence of current impact and voltage fluctuation, and prevent the circuit from being damaged. At the same time, the first voltage-stabilizing resistor 330 also helps to reduce the noise and interference of the circuit system, and improve the stability and reliability of the output signal of the second power tube 400.

[0079] It should be noted that different types of power tubes (such as MOSFET, IGBT, etc.) have different electrical characteristics and output requirements, so the design of the grounding resistance needs to be determined according to the specific type of power tube.

[0080] In some embodiments of the present application, Figure 5 FIG. 1 is a schematic diagram of the overall circuit structure of a signal transmission unit in a high-speed transmitter according to another exemplary embodiment of the present application. Figure 5 As shown, based on the above embodiment, the signal transmission unit 100 may further include a second operational amplifier circuit 130 .

[0081] The output end of the second operational amplifier circuit 130 is connected to the input end of the first power tube 120;

[0082] The input terminal of the second operational amplifier circuit 130 is used to receive an input reference voltage to convert the reference voltage into a target voltage.

[0083] It should be noted that, different from the first operational amplifier circuit 300 in the above embodiment, the second operational amplifier circuit 130 is disposed inside the signal transmission unit 100 .

[0084] Based on this, since the second operational amplifier circuit 130 has been set inside the signal transmission unit 100, in order to save hardware costs, there is no need to set the first operational amplifier circuit 300 and the second power tube 400 outside the high-speed transmitter; of course, for the high-speed transmitter of the present application, the second operational amplifier circuit 130, the first operational amplifier circuit 300 and the second power tube 400 can also be set at the same time.

[0085] Through the above implementation, the second operational amplifier circuit 130 arranged inside the signal transmission unit 100 cooperates with the first power tube 120, and can also play a certain stabilizing role in the voltage signal input to the signal transmission unit 100, and power the signal transmission unit 100 through the voltage signal output by the first power tube 120, thereby better ensuring the voltage stability of the power supply end of the signal transmission unit 100 and reducing the reduction of the output swing of the high-speed transmitter.

[0086] In some embodiments of the present application, Figure 5 As shown, based on the second operational amplifier circuit 130 in the above embodiment, the second operational amplifier circuit 130 includes a second amplifier 1301, and the second amplifier 1301 includes a non-inverting input terminal and an inverting input terminal;

[0087] The non-inverting input terminal of the second amplifier 1301 is used to receive a reference voltage;

[0088] An inverting input terminal of the second amplifier 1301 is connected to the output terminal of the first power tube 120 .

[0089] Specifically, consistent with the externally arranged second amplifier 1301 in the above-mentioned embodiment, by connecting the output end of the first power tube 120 to the inverting input end of the second amplifier 1301, the voltage signal output by the first power tube 120 can be feedback-regulated through the inverting input end of the second amplifier 1301.

[0090] The positive end of the second operational amplifier circuit 130, that is, the non-inverting input end of the second amplifier 1301, and the negative end of the second operational amplifier circuit 130, that is, the inverting input end of the second amplifier 1301. During use, the reference voltage is input to the non-inverting input end of the second amplifier 1301. When the output voltage increases, the voltage increase signal will be fed back to the negative end of the second operational amplifier circuit 130 through the connection between the inverting input end of the second amplifier 1301 and the output end of the first power tube 120. At this time, the output of the second operational amplifier circuit 130 will achieve voltage reduction based on feedback regulation. At the same time, due to the setting of the first power tube 120, the corresponding output voltage of the first power tube 120 will also be reduced, thereby forming negative feedback regulation.

[0091] Similar to the negative feedback regulation of the first operational amplifier circuit 300, through the above implementation, when the circuit signal is disturbed, the negative feedback will introduce a regulation effect in the opposite direction of the disturbance, thereby reducing or eliminating the impact of the disturbance on the system. By reducing or offsetting the adverse effects of internal or external changes in the system on the performance of the circuit system, the stability and performance of the circuit system are maintained. At the same time, the adaptability and robustness of the circuit system can be improved, ensuring that the circuit system of the application can maintain normal working conditions under various conditions.

[0092] In some embodiments of the present application, Figure 6 FIG. 1 is a schematic diagram of the overall circuit structure of a signal transmission unit in a high-speed transmitter according to another exemplary embodiment of the present application. Figure 6 As shown, based on the signal transmission unit 100 in the above embodiment, the signal transmission unit 100 further includes a second voltage stabilizing capacitor 1302 .

[0093] One end of the second voltage-stabilizing capacitor 1302 is connected to the output end of the second operational amplifier circuit 130 , and the other end of the second voltage-stabilizing capacitor 1302 is grounded.

[0094] Specifically, the second voltage-stabilizing capacitor 1302 is set based on the output end of the second operational amplifier circuit 130, which can also filter out high-frequency noise in the output voltage signal, reduce the interference amplitude, and improve the quality of signal transmission. In a complex electronic environment, high-frequency noise and interference signals may have an adverse effect on system performance. The grounding capacitor can effectively reduce these adverse factors during use through its filtering effect.

[0095] Similar to the first voltage-stabilizing capacitor 320 , in combination with this embodiment, the second voltage-stabilizing capacitor 1302 is connected to the output end of the second operational amplifier circuit 130 to stabilize the voltage signal output by the second operational amplifier circuit 130 to a certain extent.

[0096] In some embodiments of the present application, based on the signal transmission unit 100 in the above embodiment, the signal transmission unit 100 further includes a second voltage-stabilizing resistor 1303;

[0097] One end of the second voltage-stabilizing resistor 1303 is connected to the output end of the first power tube 120 , and the other end of the second voltage-stabilizing resistor 1303 is grounded.

[0098] Similar to the first voltage-stabilizing resistor 330 in the above embodiment, the second voltage-stabilizing resistor 1303 is arranged based on the output end of the first power tube 120, which can protect the first power tube 120 and other electronic components from the influence of current impact and voltage fluctuation, and prevent circuit damage. At the same time, the second voltage-stabilizing resistor 1303 also helps to reduce the noise and interference of the circuit system, and improve the stability and reliability of the output signal of the first power tube 120.

[0099] In some embodiments of the present application, based on the above embodiments, the present application further provides a serial data transmitter circuit, which includes a high-speed transmitter disclosed in any of the above embodiments. For example, a universal asynchronous receiver / transmitter UART (Universal Synchronous / Asynchronous Receiver / Transmitter), a serial peripheral interface SPI (Serial Peripheral Interface), an integrated circuit bus I2C (Inter-Integrated Circuit), etc. Of course, the above examples are only for illustration and not for limitation.

[0100] In order to disclose the technical solution of the present application more clearly and completely, the overall technical solution of the high-speed transmitter is further described in detail through the following embodiments.

[0101] In one embodiment of the present application, Figure 4 As shown, because the high-speed serial data transmitter generally transmits serial data through a link composed of multiple signal transmission units 100, this embodiment is described by taking the high-speed transmitter including multiple signal transmission units 100 as an example, and each signal transmission unit 100 is provided with a signal transceiver module 110 and a first power tube 120. Among them, the power supply end of the signal transceiver module 110 is connected to the output end of the first power tube 120.

[0102] A first operational amplifier circuit 300 and a second power tube 400 are also provided outside the signal transmission module. The first operational amplifier circuit 300 includes a first amplifier 310, the output end of the first amplifier 310 is connected to the input end of the second power tube 400, the output end of the first amplifier 310 is also connected to the input end of the first power tube 120, the output end of the second power tube 400 is connected to the output end of the first power tube 120, and the output end of the second power tube 400 is also connected to the inverting input end of the first amplifier 310.

[0103] A grounded first voltage stabilizing capacitor 320 is also provided in series at the output end of the first amplifier 310 .

[0104] A grounded first voltage-stabilizing resistor 330 is also provided in series at the output end of the second power tube 400 .

[0105] Based on the overall technical solution of the above embodiment, the high-speed transmitter signal transmission process is described as follows:

[0106] The reference voltage is input through the non-inverting input terminal of the first amplifier 310, and the target voltage is output through the output terminal of the first amplifier 310; then the common voltage is output through the output terminal of the second power tube 400; at the same time, the target voltage turns on the first power tube 120, and the output voltage signal of the first power tube 120 is combined with the common voltage to power the signal transmission unit 100. The common voltage output from the output terminal of the second power tube 400 is also input as a feedback voltage into the inverting input terminal of the first amplifier 310 to achieve feedback regulation.

[0107] In this embodiment, there is only one first operational amplifier circuit 300 and one second power tube 400 disposed outside the signal transmission unit 100, and the circuit formed by the combination of the first operational amplifier circuit 300 and the second power tube 400 supplies power to the plurality of signal transmission units 100 respectively.

[0108] Of course, in other embodiments of the present application, there may be multiple first operational amplifier circuits 300 and second power tubes 400 disposed outside the signal transmission unit 100 .

[0109] For example, in the first case, there is a one-to-one form, that is, one signal transmission unit 100 corresponds to a circuit structure composed of a first operational amplifier circuit 300 and a second power tube 400.

[0110] For another example, the second situation exists in a one-to-many form, that is, multiple signal transmission units 100 correspond to a circuit structure composed of a first operational amplifier circuit 300 and a second power tube 400, wherein the signal transmission units 100 with different corresponding relationships can be the same or different.

[0111] The second case is illustrated by an example. For example, multiple signal transmission units 100 are divided into three groups. The first group can be a circuit structure consisting of three signal transmission units 100 corresponding to a first operational amplifier circuit 300 and a second power tube 400; the second group can be a circuit structure consisting of two signal transmission units 100 corresponding to a first operational amplifier circuit 300 and a second power tube 400; the third group can also be a circuit structure consisting of two signal transmission units 100 corresponding to a first operational amplifier circuit 300 and a second power tube 400.

[0112] It should be noted that, since the circuit structure composed of the first operational amplifier circuit 300 and the second power tube 400 is arranged outside the signal transmission unit 100, the circuit area occupied by the signal transmission unit 100 can be saved, thereby saving hardware costs.

[0113] In another embodiment of the present application, Figure 7 FIG. 1 is a schematic diagram of the overall circuit structure of a transmission link in a high-speed transmitter according to another exemplary embodiment of the present application. Figure 7 As shown, similarly, because the high-speed serial data transmitter generally transmits serial data through a link composed of multiple signal transmission units 100, this embodiment also takes the high-speed transmitter including multiple signal transmission units 100 as an example, and each signal transmission unit 100 is provided with a signal transceiver module 110, a first power tube 120 and a second operational amplifier circuit 130. Among them, the power supply end of the signal transceiver module 110 is connected to the output end of the first power tube 120.

[0114] The second operational amplifier circuit 130 includes a second amplifier 1301 . The output end of the second amplifier 1301 is connected to the input end of the first power tube 120 . The output end of the first power tube 120 is also connected to the inverting input end of the second amplifier 1301 .

[0115] A grounded second voltage stabilizing capacitor 1302 is also provided in series at the output end of the second amplifier 1301 .

[0116] A grounded second voltage-stabilizing resistor 1303 is also provided in series at the output end of the first power tube 120 .

[0117] Based on the overall technical solution of the above embodiment, the high-speed transmitter signal transmission process is described as follows:

[0118] The reference voltage is input through the non-inverting input terminal of the second amplifier 1301, and the target voltage is output through the output terminal of the second amplifier 1301; at the same time, the target voltage turns on the first power tube 120, and the signal transmission unit 100 is powered according to the output voltage signal of the first power tube 120. The output voltage signal of the output terminal of the first power tube 120 is also input as a feedback voltage into the inverting input terminal of the second amplifier 1301 to achieve feedback regulation.

[0119] In this embodiment, a single signal transmission unit 100 is powered by a circuit formed by combining the first operational amplifier circuit 300 and the first power tube 120 disposed inside the signal transmission unit 100 .

[0120] It should be noted that, since the second operational amplifier circuit 130 is arranged inside the signal transmission unit 100, the circuit area occupied by the signal transmission unit 100 is relatively large compared with the previous embodiment. However, because the second operational amplifier circuit 130 is arranged inside the signal transmission unit 100, the high-speed transmitter is more integrated, durable and not easily damaged.

[0121] At the same time, for the drawings of the above-mentioned embodiments of the present application, it should be noted that the block diagrams in the drawings illustrate the electronic components, circuit structures, and corresponding connection relationships according to the various embodiments of the present application, but do not limit their positional relationships. At the same time, the inclusion relationship of modules or electronic components is only explained through the above-mentioned embodiments, and no specific restrictions are made in the drawings.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0123] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A high-speed transmitter, characterized in that: A signal transmission unit is included, wherein the signal transmission unit includes: A signal transceiver module is used to transmit the input target signal; A first power tube disposed inside the signal transmission unit, whose input end is used to receive an input target voltage, and whose output end is connected to the power supply end of the signal transceiver module to reduce the voltage drop of the power supply end of the signal transceiver module; There are multiple signal transmission units, and the multiple signal transmission units are connected in series to form a transmission link; The high-speed transmitter also includes a first operational amplifier circuit and a second power tube; The output end of the first operational amplifier circuit is connected to the input end of the second power tube and the input end of the first power tube respectively, and the output end of the second power tube is connected to the output end of the first power tube; The input end of the first operational amplifier circuit is used to receive an input reference voltage to convert the reference voltage to obtain the target voltage.

2. The high-speed transmitter according to claim 1, characterized in that: The first operational amplifier circuit includes a first amplifier, and the first amplifier includes a non-inverting input terminal and an inverting input terminal; The non-inverting input terminal of the first amplifier is used to receive the reference voltage; The inverting input terminal of the first amplifier is connected to the output terminal of the second power tube.

3. The high-speed transmitter according to claim 1, characterized in that: The high-speed transmitter also includes a first voltage stabilizing capacitor; One end of the first voltage-stabilizing capacitor is connected to the output end of the first operational amplifier circuit, and the other end of the first voltage-stabilizing capacitor is grounded.

4. The high-speed transmitter according to claim 1, characterized in that: The high-speed transmitter also includes a first voltage-stabilizing resistor; One end of the first voltage-stabilizing resistor is connected to the output end of the second power tube, and the other end of the first voltage-stabilizing resistor is grounded.

5. The high-speed transmitter according to claim 1, characterized in that: The signal transmission unit further includes a second operational amplifier circuit; The output end of the second operational amplifier circuit is connected to the input end of the first power tube; The input end of the second operational amplifier circuit is used to receive an input reference voltage to convert the reference voltage to obtain the target voltage.

6. The high-speed transmitter according to claim 5, characterized in that: The second operational amplifier circuit includes a second amplifier, and the second amplifier includes a non-inverting input terminal and an inverting input terminal; The non-inverting input terminal of the second amplifier is used to receive the reference voltage; The inverting input terminal of the second amplifier is connected to the output terminal of the first power tube.

7. The high-speed transmitter according to claim 5, characterized in that: The signal transmission unit further includes a second voltage stabilizing capacitor; One end of the second voltage-stabilizing capacitor is connected to the output end of the second operational amplifier circuit, and the other end of the second voltage-stabilizing capacitor is grounded.

8. A serial data transmitter circuit, characterized in that: Comprising a high-speed transmitter as claimed in any one of claims 1-7.

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