MCU-based SIP operational amplifier circuit

Abstract

The utility model relates to the field of chip integration, and particularly discloses an SIP (Session Initiation Protocol) operational amplifier circuit based on an MCU (Microprogrammed Control Unit). Comprising an MCU, and the MCU comprises an ADC module; a plurality of operational amplifiers which are in communication connection with the ADC module; the first reference source is connected with the voltage-stabilized power supply module of the MCU and is used for providing a first voltage; and the second reference source is connected with the operational amplifier and is used for providing a second voltage. The high-precision first reference source and the high-precision second reference source are used for providing stable reference voltage, and the accuracy of the signal amplification and conversion process is ensured. Furthermore, a stable third voltage is provided through the direct current power supply module, a stable power supply is provided for the MCU and the operational amplifier, and the influence of power supply fluctuation on signal processing is reduced. Meanwhile, the operational amplifier is connected with the gain adjusting resistor through the gain adjusting interface, and accurate control over the signal amplification factor is achieved.

Description

Technical Field

[0001] The utility model relates to the field of chip integration, and particularly to a SIP operational amplifier circuit based on an MCU. Background Art

[0002] With the development of electronic devices towards smaller size, higher performance and greater integration, the system-in-package operational amplifier circuit technology based on microcontroller units has emerged. This technology combines the processing power of microcontroller units and the signal amplification function of operational amplifier circuits, enabling electronic devices to provide high-quality signal processing and control functions while maintaining small size and low power consumption. This integrated design not only simplifies circuit layout and connection, but also improves the stability and reliability of the system, bringing new possibilities and opportunities to the design and manufacture of modern electronic products.

[0003] This technology realizes the efficient processing of analog signals by integrating multiple operational amplifiers and microcontroller units in one package. The integration of microcontroller units provides flexible control and processing capabilities, enabling data acquisition, signal processing and execution of decision-making logic. At the same time, the operational amplifier is responsible for performing precise analog signal amplification and conditioning tasks to ensure signal quality and stability. This integrated design not only saves space and power consumption, but also improves the overall performance and reliability of the system, and is applicable to various application scenarios that require complex signal processing and control functions.

[0004] In the SIP operational amplifier circuit, how to ensure the accuracy and stability of signal processing is the key to realizing high-performance electronic systems. Summary of the Utility Model

[0005] In order to overcome the above technical problems existing in the prior art, the embodiment of the utility model provides a SIP operational amplifier circuit based on an MCU, which provides a stable reference voltage by using high-precision first and second reference sources to ensure the accuracy of the signal amplification and conversion processes. Further, a stable third voltage is provided by a DC power supply module to provide stable power supplies for the MCU and the operational amplifier, reducing the influence of power supply fluctuations on signal processing.

[0006] To achieve the above object, the embodiment of the utility model provides a SIP operational amplifier circuit based on an MCU, and the SIP operational amplifier circuit based on an MCU includes: an MCU, where the MCU includes an ADC module; a plurality of operational amplifiers, which are communicatively connected to the ADC module; a first reference source, which is connected to the voltage stabilization power supply module of the MCU and is used for providing a first voltage; and a second reference source, which is connected to the operational amplifier and is used for providing a second voltage.

[0007] Preferably, the MCU is connected to external devices through JTAG interface, UART interface, GPIO interface and SPI interface.

[0008] Preferably, the model of the MCU is: JS32F103VB.

[0009] Preferably, the operational amplifier includes an analog input interface and a gain adjustment interface; the analog input interface is used to receive an external analog input signal; the operational amplifier is connected to a gain adjustment resistor through the gain adjustment interface.

[0010] Preferably, the MCU-based SIP operational amplifier circuit includes 2 operational amplifiers.

[0011] Preferably, the model of the operational amplifier is: JOP8552.

[0012] Preferably, the first reference source and the second reference source are connected to a DC power supply module, and the DC power supply module is used to provide a third voltage.

[0013] Preferably, the model of the first reference source is: JS3025, and the model of the second reference source is: JS3012.

[0014] Preferably, the first voltage is 2.5V, the second voltage is 1.25V, and the third voltage is 3.3V.

[0015] Preferably, the packaging method of the MCU-based SIP operational amplifier circuit is LQFP64.

[0016] Through the technical solution provided by the present invention, the present invention has at least the following technical effects:

[0017] By using high-precision first and second reference sources to provide stable reference voltages, the accuracy of the signal amplification and conversion processes is ensured. Further, a stable third voltage is provided by the DC power supply module to supply stable power to the MCU and the operational amplifier, reducing the influence of power fluctuations on signal processing. At the same time, the operational amplifier is connected to a gain adjustment resistor through the gain adjustment interface to achieve precise control of the signal amplification multiple.

[0018] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification, and are used together with the following specific implementation to explain the embodiments of the present invention, but do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0020] Figure 1 It is a schematic structural diagram of a SIP operational amplifier circuit based on an MCU provided by an embodiment of the utility model. Specific embodiments

[0021] The following will describe in detail the specific embodiments of the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the embodiments of the present utility model, and are not used to limit the embodiments of the present utility model.

[0022] The terms "system" and "network" in the embodiments of the present utility model can be used interchangeably. "Plurality" means two or more. In view of this, in the embodiments of the present utility model, "plurality" can also be understood as "at least two". "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " generally represents an "or" relationship between the associated objects before and after, unless otherwise specified. In addition, it should be understood that in the description of the embodiments of the present utility model, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0023] Please refer to Figure 1 , an embodiment of the present utility model provides a SIP operational amplifier circuit based on an MCU. The SIP operational amplifier circuit based on an MCU includes: an MCU, and the MCU includes an ADC module; a plurality of operational amplifiers, which are communicatively connected to the ADC module; a first reference source, which is connected to the voltage stabilizing power supply module of the MCU and is used to provide a first voltage; a second reference source, which is connected to the operational amplifier and is used to provide a second voltage.

[0024] Preferably, the SIP operational amplifier circuit based on an MCU includes 2 operational amplifiers.

[0025] In a possible implementation manner, the MCU has sufficient I / O ports for communicating with external devices. The ADC module of the MCU is configured to collect analog signals from the operational amplifier at an appropriate sampling rate. Two operational amplifiers are designed, and each operational amplifier is responsible for processing different signal paths. The two operational amplifiers need to communicate with the ADC module of the MCU to transmit the processed analog signals. Further, the first reference source is connected to the voltage stabilizing power supply module of the MCU to provide a stable first voltage. The first voltage is used to ensure the stable operation of the internal circuit of the MCU. The second reference source is connected to the two operational amplifiers to provide a stable second voltage. The second voltage is the basis for the normal operation of the operational amplifier.

[0026] Specifically, the operational amplifier receives an external analog signal and performs amplification, filtering, or conversion operations. The processed signal is output through the operational amplifier and transmitted to the ADC module of the MCU. The ADC module samples these signals and converts them into digital form for further processing by the MCU.

[0027] In an embodiment of the present utility model, the MCU is connected to external devices through JTAG interface, UART interface, GPIO interface, and SPI interface.

[0028] Preferably, the model of the MCU is: JS32F103VB.

[0029] In a possible implementation, the JTAG interface, UART interface, GPIO interface, and SPI interface are used for debugging, communication, and control of the MCU. Among them, the JTAG interface is used for hardware debugging and programming of the MCU. Developers can perform program burning and real-time debugging on the MCU through external devices. The UART interface is used for serial communication, for log output, command input, or data transmission. The GPIO is configured as a control signal for controlling external devices or receiving external signals. The SPI interface is used for high-speed synchronous serial communication with external devices. Further, by selecting the MCU of model JS32F103VB, a processing speed of up to 72 MHz is provided, which can quickly process complex algorithms and tasks, and the built-in ADC module can provide high-precision analog signal conversion.

[0030] In an embodiment of the present utility model, the operational amplifier includes an analog input interface and a gain adjustment interface; the analog input interface is used to receive an external analog input signal; the operational amplifier is connected to a gain adjustment resistor through the gain adjustment interface.

[0031] Preferably, the model of the operational amplifier is: JOP8552.

[0032] In a possible implementation, the gain adjustment interface allows the function of the operational amplifier to be extended through an external circuit without changing the internal circuit of the operational amplifier, increasing the flexibility and scalability of the design. Further, users can flexibly adjust the gain of the operational amplifier by changing the value of the external resistor according to specific application requirements, so as to adapt to different signal amplification requirements. Further, by selecting the operational amplifier of model JOP8552, the effect of amplifying the signal and high-speed response can be achieved without introducing excessive noise.

[0033] In an embodiment of the present utility model, the first reference source and the second reference source are connected to a DC power supply module, and the DC power supply module is used to provide a third voltage.

[0034] Preferably, the model of the first reference source is: JS3025, and the model of the second reference source is: JS3012.

[0035] Preferably, the first voltage is 2.5V, the second voltage is 1.25V, and the third voltage is 3.3V.

[0036] In a possible implementation, the first reference source is connected to the DC power supply module and the operational amplifier, and is used to convert the 3.3V voltage of the DC power supply module into a 2.5V working voltage suitable for the operational amplifier. One end of the second reference source is connected to the DC power supply module through the first reference source, and the other two ends of the second reference source are connected to the voltage stabilizing power supply module of the MCU, and are used to convert the 3.3V voltage of the DC power supply module into a 1.25V working voltage suitable for the MCU. Further, according to different required working voltages and stability requirements, the first reference source adopts the JS3025 model, and the second reference source adopts the JS3012 model, which saves costs on the premise of meeting the requirements.

[0037] In the embodiment of the present utility model, the packaging method of the MCU-based SIP operational amplifier circuit is LQFP64.

[0038] In a possible implementation, the LQFP64 package adopts surface mount technology, making the welding process relatively simple and stable. At the same time, the LQFP64 package provides 64 pins to achieve the effect of integrating more functions and circuits in a relatively small package. Further, the LQFP64 package has good heat dissipation performance and can effectively transfer the heat generated by the operational amplifier circuit to the circuit board, thus helping to maintain the stability and long-term reliability of the system.

[0039] The optional implementation manners of the embodiment of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the embodiment of the present utility model is not limited to the specific details in the above implementation manners. Within the scope of the technical concept of the embodiment of the present utility model, various simple modifications can be made to the technical solution of the embodiment of the present utility model, and these simple modifications all belong to the protection scope of the embodiment of the present utility model.

[0040] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner. To avoid unnecessary repetition, the embodiment of the present utility model does not separately describe various possible combination manners.

[0041] In addition, any combination can be made between various different implementation manners of the embodiment of the present utility model, as long as it does not violate the idea of the embodiment of the present utility model, it should also be regarded as the content disclosed by the embodiment of the present utility model.

Claims

1. A SIP operational amplifier circuit based on MCU, characterized in that: The MCU-based SIP operational amplifier circuit includes: MCU, wherein the MCU includes an ADC module; A plurality of operational amplifiers are communicatively connected with the ADC module; A first reference source, connected to a voltage-stabilizing power supply module of the MCU, for providing a first voltage; The second reference source is connected to the operational amplifier and is used to provide a second voltage.

2. The MCU-based SIP operational amplifier circuit according to claim 1, characterized in that: The MCU is connected to external devices via a JTAG interface, a UART interface, a GPIO interface and a SPI interface.

3. The MCU-based SIP operational amplifier circuit according to claim 2, characterized in that: The model of the MCU is: JS32F103VB.

4. The MCU-based SIP operational amplifier circuit according to claim 1, characterized in that: The operational amplifier includes an analog input interface and a gain adjustment interface; The analog input interface is used to receive an external analog input signal; The operational amplifier is connected to the gain adjustment resistor via the gain adjustment interface.

5. The MCU-based SIP operational amplifier circuit according to claim 1, characterized in that: The MCU-based SIP operational amplifier circuit includes two operational amplifiers.

6. The MCU-based SIP operational amplifier circuit according to claim 5, characterized in that: The model of the operational amplifier is: JOP8552.

7. The MCU-based SIP operational amplifier circuit according to claim 1, characterized in that: The first reference source and the second reference source are connected to a DC power supply module, and the DC power supply module is used to provide a third voltage.

8. The MCU-based SIP operational amplifier circuit according to claim 7, characterized in that: The model of the first reference source is JS3025, and the model of the second reference source is JS3012.

9. The MCU-based SIP operational amplifier circuit according to claim 8, characterized in that: The first voltage is 2.5V, the second voltage is 1.25V, and the third voltage is 3.3V.

10. The MCU-based SIP operational amplifier circuit according to claim 1, characterized in that: The packaging mode of the MCU-based SIP operational amplifier circuit is LQFP64.

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