Seven-pin optical module

Abstract

The utility model relates to a seven-pin optical module, which comprises a shell, and a driving circuit, an emitter and a receiver which are arranged in the shell, the driving circuit is externally provided with seven pins outside the shell, the seven pins are a pin1 GND, a pin2 RD, a pin3 NC, a pin4 SD, a pin5 NC, a pin6 TD and a pin7 Vcc in sequence, power supply pins of the transmitter and the receiver are connected with the pin7 Vcc, and grounding pins of the transmitter and the receiver are connected with the pin1 GND. The receiver and the transmitter of the seven-pin optical module share one power supply pin of the pin7 Vcc and share one grounding pin of the pin1 GND, compared with a traditional nine-pin optical module, the receiver and the transmitter of the seven-pin optical module respectively correspond to the power supply pin and the grounding pin, one power supply pin and one grounding pin are reduced, normal use of the optical module is not affected, and meanwhile, the optical module is convenient to use. The number of the pins is reduced to 7, so that the size of the optical module is reduced, the production cost is reduced, and the reliability and stability of the optical module are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical modules, in particular to a 7-pin optical module. Background Art

[0002] With the rapid development of information technology, optical communication technology has been widely used in the field of data transmission due to its high speed, stability, strong anti-interference and other characteristics. Especially driven by emerging technologies such as big data, cloud computing, and the Internet of Things, the performance and volume requirements for optical communication modules are getting higher and higher.

[0003] The existing 9-pin optical module has 9 external pins, namely pin1 GNDR (receiver ground pin), pin2 RD (receiver data output), pin3 NC (not connected), pin4 SD (receiver no light alarm), pin5 VccR (receiver positive power supply), pin6 VccT (transmitter positive power supply), pin7 NC (not connected), pin8 TD (transmitter data input), pin9 GNDT (transmitter ground pin). Due to the excessive number of pins, the overall size of the module is large. In some special application scenarios, due to space limitations, such large-volume optical transceiver modules are often difficult to install or integrate.

[0004] In addition, the design with too many pins increases the complexity of manufacturing and assembly, and increases production costs. At the same time, too many pins also increase the risk of connection failure and reduce the reliability and stability of the product.

[0005] Therefore, in view of the above problems, it is necessary to develop an integrated optical transceiver module with a smaller size and fewer pins to meet the needs of installation in special small spaces. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a 7-pin optical module to overcome the deficiencies in the above-mentioned prior art.

[0007] The utility model solves the above-mentioned technical problem with the following technical solution: a 7-pin optical module, comprising a shell, and a driving circuit, a transmitter and a receiver built in the shell; the driving circuit has 7 pins externally arranged outside the shell, and the 7 pins are pin1 GND, pin2 RD, pin3 NC, pin4 SD, pin5 NC, pin6 TD, and pin7 Vcc in sequence; the power pins of the transmitter and the receiver are both connected to pin7 Vcc, and the ground pins of the transmitter and the receiver are both connected to pin1 GND.

[0008] The beneficial effect of the utility model is that the receiver and transmitter of the 7-pin optical module of the present application share a power pin, pin7 Vcc, and a ground pin, pin1 GND. Compared with the traditional 9-pin optical module in which the receiver and transmitter correspond to the power pin and the ground pin respectively, one power pin and one ground pin are reduced. While not affecting the normal use of the optical module, the number of pins is reduced to 7, thereby reducing the size of the optical module, reducing the production cost, and improving the reliability and stability of the optical module.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Further, the transmitter is a transmitting component of a BOSA device, the receiver is a receiving component of a BOSA device, and the driving circuit includes a GNC1250 chip;

[0011] The LD- pin of the GNC1250 chip is connected to the second end of the capacitor C30 and the second end of the resistor R1, the first end of the capacitor C30 is connected to the second end of the resistor R2, the first end of the resistor R2 is connected to the first end of the inductor L2, the first end of the resistor R41, the first end of the capacitor C35 and the pin 14 of the transmitter, the second end of the capacitor C35 is connected to the first end of the resistor R22, the pin 11 of the transmitter is connected to pin1 GND, the pin 13 of the transmitter is connected to MPD, the pin 12 of the transmitter is connected to the first end of the inductor L1, and the second end of the inductor L1 is connected to pin7 Vcc;

[0012] The BIAS pin of the GNC1250 chip is connected to the second end of the resistor R5 and the first end of the capacitor C37, the first end of the resistor R5 is connected to the second end of the inductor L2, and the second end of the capacitor C37 is connected to the second end of the resistor R41, the resistor R22, and the first end of the resistor R4;

[0013] The MODSET pin of the GNC1250 chip is connected to the second end of the resistor R4, and the first end of the resistor R4 is connected to pin1GND;

[0014] The BIASSET pin of the GNC1250 chip is connected to the first end of the resistor R24 ​​and the first end of the resistor R25, the second end of the resistor R24 ​​is grounded through the resistor R26, and the second end of the resistor R25 is connected to pin1 GND;

[0015] The RxINP pin of the GNC1250 chip is connected to the second end of the capacitor C7 and the first end of the resistor R7, the second end of the resistor R7 is connected to the second end of the capacitor C1, the first end of the capacitor C1 is connected to the second end of the capacitor C3 and 18, the first end of the capacitor C3 is connected to the first end of the capacitor C7 and the pin 17 of the receiver, the pin 16 of the receiver is connected to the first end of the resistor R14, the pin 15 of the receiver is grounded, and the second end of the resistor R14 is connected to pin7Vcc;

[0016] The RxINN pin of the GNC1250 chip is connected to the second end of the resistor R7 and the second end of the capacitor C1;

[0017] The RTH pin of the GNC1250 chip is connected to pin1 GND through resistor R12;

[0018] The VCCR pin of the GNC1250 chip is connected to pin7 Vcc;

[0019] The RxOUTP pin of the GNC1250 chip is connected to the first end of the capacitor R11 and the first end of the resistor R73, and the second end of the capacitor R11 is connected to the pin 2RD+ of the optical module body;

[0020] The RxOUTN pin of the GNC1250 chip is connected to the first end of the capacitor R10 and the first end of the resistor R13, the second end of the capacitor R10 is connected to the pin 3RD- of the optical module body, and the second end of the resistor R73 is grounded and connected to the second end of the resistor R13;

[0021] The LOSPECL pin of the GNC1250 chip is connected to the pin 4SD of the optical module body and the second end of the resistor R23, and the first end of the resistor R23 is connected to pin1 GND;

[0022] The GND pin of the GNC1250 chip is connected to ground;

[0023] The TxINN pin of the GNC1250 chip is connected to the second end of the resistor R9 and the first end of the capacitor C16, and the second end of the capacitor C16 is connected to the pin 5TD- of the optical module body;

[0024] The TxINP pin of the GNC1250 chip is connected to the first end of the resistor R9 and the first end of the capacitor C15, and the second end of the capacitor C15 is connected to the pin 6TD+ of the optical module body;

[0025] The VCCT pin of the GNC1250 chip is connected to the first end of the resistor R1;

[0026] The MDIN pin of the GNC1250 chip is connected to pin1 GND through capacitor C4;

[0027] The EP pin of the GNC1250 chip is connected to pin1 GND.

[0028] Furthermore, a second end of the inductor L1 is connected to a first end of the capacitor C9, and a second end of the capacitor C9 is connected to pin1 GND.

[0029] Furthermore, pin 12 of the transmitter is connected to a first end of capacitor C12, and a second end of capacitor C12 is connected to pin1 GND.

[0030] Furthermore, the VCCT pin of the GNC1250 chip is connected to the second end of the capacitor C14, and the first end of the capacitor C14 is connected to pin1 GND.

[0031] Furthermore, a second end of the resistor R14 is connected to a first end of the capacitor C11, and a second end of the capacitor C11 is connected to pin1 GND.

[0032] Furthermore, pin 16 of the receiver is connected to a first end of capacitor C2, and a second end of capacitor C2 is connected to pin1 GND.

[0033] Furthermore, the shell has an L-shaped structure, and the PCB circuit board of the drive circuit and the BOSA device are assembled into an L-shaped structure and embedded in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is the circuit diagram of the utility model. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] like Figure 1 As shown, Example 1, a 7-pin optical module, includes a shell, and a driving circuit, a transmitter and a receiver built into the shell; the driving circuit has 7 pins outside the shell, and the 7 pins are pin1 GND (ground), pin2 RD (receiver forward data output), pin3 NC (not connected), pin4 SD (receiver no light alarm), pin5 NC (not connected), pin6TD (transmitter reverse data input), pin7 Vcc (power supply), the power pins of the transmitter and the receiver are both connected to pin7Vcc, and the ground pins of the transmitter and the receiver are both connected to pin1 GND.

[0037] The receiver and transmitter of the 7-pin optical module of the present application share a power pin, pin7 Vcc, and a ground pin, pin1 GND. Compared with the traditional 9-pin optical module in which the receiver and transmitter correspond to the power pin and the ground pin respectively, one power pin and one ground pin are reduced. Without affecting the normal use of the optical module, the number of pins is reduced to 7, thereby reducing the size of the optical module, reducing the production cost, and improving the reliability and stability of the optical module.

[0038] Embodiment 2: This embodiment is a further improvement on the basis of embodiment 1, and its details are as follows:

[0039] The transmitter is the transmitting component of the BOSA device, the receiver is the receiving component of the BOSA device, and the driving circuit includes a GNC1250 chip (a driver and linear amplifier, used for driving the laser and linear amplifying the detector);

[0040] The LD- pin of the GNC1250 chip is connected to the second end of the capacitor C30 and the second end of the resistor R1, the first end of the capacitor C30 is connected to the second end of the resistor R2, the first end of the resistor R2 is connected to the first end of the inductor L2, the first end of the resistor R41, the first end of the capacitor C35 and the pin 14 of the transmitter, the second end of the capacitor C35 is connected to the first end of the resistor R22, the pin 11 of the transmitter is connected to pin1 GND, the pin 13 of the transmitter is connected to MPD (backlight diode, responsible for providing compensation current), the pin 12 of the transmitter is connected to the first end of the inductor L1, and the second end of the inductor L1 is connected to pin7 Vcc;

[0041] The BIAS pin of the GNC1250 chip is connected to the second end of the resistor R5 and the first end of the capacitor C37, the first end of the resistor R5 is connected to the second end of the inductor L2, and the second end of the capacitor C37 is connected to the second end of the resistor R41, the resistor R22, and the first end of the resistor R4;

[0042] The MODSET pin of the GNC1250 chip is connected to the second end of the resistor R4, and the first end of the resistor R4 is connected to pin1GND;

[0043] The BIASSET pin of the GNC1250 chip is connected to a first end of a resistor R24 ​​and a first end of a resistor R25, a second end of the resistor R24 ​​is grounded via a resistor R26, and a second end of the resistor R25 is connected to pin1 GND.

[0044] The RxINP pin of the GNC1250 chip is connected to the second end of the capacitor C7 and the first end of the resistor R7, the second end of the resistor R7 is connected to the second end of the capacitor C1, the first end of the capacitor C1 is connected to the second end of the capacitor C3 and 18, the first end of the capacitor C3 is connected to the first end of the capacitor C7 and the pin 17 of the receiver, the pin 16 of the receiver is connected to the first end of the resistor R14, the pin 15 of the receiver is grounded, and the second end of the resistor R14 is connected to pin7Vcc;

[0045] The RxINN pin of the GNC1250 chip is connected to the second end of the resistor R7 and the second end of the capacitor C1;

[0046] The RTH pin of the GNC1250 chip is connected to pin1 GND through resistor R12;

[0047] The VCCR pin of the GNC1250 chip is connected to pin7 Vcc;

[0048] The RxOUTP pin of the GNC1250 chip is connected to the first end of the capacitor R11 and the first end of the resistor R73, and the second end of the capacitor R11 is connected to the pin 2RD+ of the optical module body;

[0049] The RxOUTN pin of the GNC1250 chip is connected to the first end of the capacitor R10 and the first end of the resistor R13, the second end of the capacitor R10 is connected to the pin 3RD- of the optical module body, and the second end of the resistor R73 is grounded and connected to the second end of the resistor R13;

[0050] The LOSPECL pin of the GNC1250 chip is connected to the pin 4SD of the optical module body and the second end of the resistor R23, and the first end of the resistor R23 is connected to pin1 GND;

[0051] The GND pin of the GNC1250 chip is connected to ground;

[0052] The TxINN pin of the GNC1250 chip is connected to the second end of the resistor R9 and the first end of the capacitor C16, and the second end of the capacitor C16 is connected to the pin 5TD- of the optical module body;

[0053] The TxINP pin of the GNC1250 chip is connected to the first end of the resistor R9 and the first end of the capacitor C15, and the second end of the capacitor C15 is connected to the pin 6TD+ of the optical module body;

[0054] The VCCT pin of the GNC1250 chip is connected to the first end of the resistor R1;

[0055] The MDIN pin of the GNC1250 chip is connected to pin1 GND through capacitor C4;

[0056] The EP pin of the GNC1250 chip is connected to pin1 GND.

[0057] In the specific implementation, the transmitter is a laser, the receiver is a detector, and the functions of each pin are as follows:

[0058] Transmitter pin 11: ground;

[0059] Pin 12 of the transmitter: power supply;

[0060] Pin 13 of the transmitter: positive pole of the laser;

[0061] Pin 14 of the transmitter: negative pole of the laser;

[0062] Pin 15 of the receiver: detector ground;

[0063] Pin 16 of the receiver: detector power supply;

[0064] Pin 17 of the receiver: positive pole of detector data;

[0065] Pin 18 of the receiver: negative pole of detector data.

[0066] Embodiment 3, this embodiment is a further improvement on the basis of embodiment 2, and its details are as follows:

[0067] The second end of the inductor L1 is connected to the first end of the capacitor C9, and the second end of the capacitor C9 is connected to pin1 GND.

[0068] Embodiment 4: This embodiment is a further improvement on the basis of embodiment 2, and its details are as follows:

[0069] Pin 12 of the transmitter is connected to a first end of capacitor C12, and a second end of capacitor C12 is connected to pin1 GND.

[0070] Embodiment 5: This embodiment is a further improvement on the basis of embodiment 2, and its details are as follows:

[0071] The VCCT pin of the GNC1250 chip is connected to the second end of the capacitor C14, and the first end of the capacitor C14 is connected to pin1 GND.

[0072] Embodiment 6: This embodiment is a further improvement on the basis of embodiment 2, and its details are as follows:

[0073] A second end of the resistor R14 is connected to a first end of the capacitor C11 , and a second end of the capacitor C11 is connected to pin1GND.

[0074] Embodiment 7, this embodiment is a further improvement on the basis of embodiment 2, and its details are as follows:

[0075] Pin 16 of the receiver is connected to a first end of capacitor C2, and a second end of capacitor C2 is connected to pin1 GND.

[0076] Embodiment 8: This embodiment is a further improvement based on any one of Embodiments 1 to 7, and its details are as follows:

[0077] The housing is L-shaped, and the PCB circuit board of the driving circuit and the BOSA device are assembled into an L-shaped structure and embedded in the housing. The housing of the existing 9-pin optical module is rectangular, and the PCB circuit board of the driving circuit and the BOSA device are generally assembled into an L-shape, resulting in a large gap in the rectangular housing. The present application sets the housing into an L-shaped structure that matches the PCB circuit board of the driving circuit and the BOSA device, reduces the gap inside the housing, and further reduces the volume of the optical module.

[0078] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A 7-pin optical module, characterized in that: It includes a shell, and a driving circuit, a transmitter and a receiver built in the shell; the driving circuit has 7 pins outside the shell, and the 7 pins are pin1 GND, pin2 RD, pin3 NC, pin4 SD, pin5 NC, pin6TD, and pin7 Vcc in sequence; the power pins of the transmitter and the receiver are both connected to the pin7 Vcc, and the ground pins of the transmitter and the receiver are both connected to the pin1 GND.

2. A 7-pin optical module according to claim 1, characterized in that: The transmitter is a transmitting component of a BOSA device, the receiver is a receiving component of a BOSA device, and the driving circuit includes a GNC1250 chip; The LD- pin of the GNC1250 chip is connected to the second end of the capacitor C30 and the second end of the resistor R1, the first end of the capacitor C30 is connected to the second end of the resistor R2, the first end of the resistor R2 is connected to the first end of the inductor L2, the first end of the resistor R41, the first end of the capacitor C35 and the pin 14 of the transmitter, the second end of the capacitor C35 is connected to the first end of the resistor R22, the pin 11 of the transmitter is connected to pin1 GND, the pin 13 of the transmitter is connected to MPD, the pin 12 of the transmitter is connected to the first end of the inductor L1, and the second end of the inductor L1 is connected to pin7 Vcc; The BIAS pin of the GNC1250 chip is connected to the second end of the resistor R5 and the first end of the capacitor C37, the first end of the resistor R5 is connected to the second end of the inductor L2, and the second end of the capacitor C37 is connected to the second end of the resistor R41, the resistor R22, and the first end of the resistor R4; The MODSET pin of the GNC1250 chip is connected to the second end of the resistor R4, and the first end of the resistor R4 is connected to pin1 GND; The BIASSET pin of the GNC1250 chip is connected to the first end of the resistor R24 ​​and the first end of the resistor R25, the second end of the resistor R24 ​​is grounded through the resistor R26, and the second end of the resistor R25 is connected to pin1 GND; The RxINP pin of the GNC1250 chip is connected to the second end of the capacitor C7 and the first end of the resistor R7, the second end of the resistor R7 is connected to the second end of the capacitor C1, the first end of the capacitor C1 is connected to the second end of the capacitor C3 and 18, the first end of the capacitor C3 is connected to the first end of the capacitor C7 and the pin 17 of the receiver, the pin 16 of the receiver is connected to the first end of the resistor R14, the pin 15 of the receiver is grounded, and the second end of the resistor R14 is connected to pin7 Vcc; The RxINN pin of the GNC1250 chip is connected to the second end of the resistor R7 and the second end of the capacitor C1; The RTH pin of the GNC1250 chip is connected to pin1 GND through resistor R12; The VCCR pin of the GNC1250 chip is connected to pin7 Vcc; The RxOUTP pin of the GNC1250 chip is connected to the first end of the capacitor R11 and the first end of the resistor R73, and the second end of the capacitor R11 is connected to the pin 2RD+ of the optical module body; The RxOUTN pin of the GNC1250 chip is connected to the first end of the capacitor R10 and the first end of the resistor R13, the second end of the capacitor R10 is connected to the pin 3RD- of the optical module body, and the second end of the resistor R73 is grounded and connected to the second end of the resistor R13; The LOSPECL pin of the GNC1250 chip is connected to the pin 4SD of the optical module body and the second end of the resistor R23, and the first end of the resistor R23 is connected to pin1 GND; The GND pin of the GNC1250 chip is grounded; The TxINN pin of the GNC1250 chip is connected to the second end of the resistor R9 and the first end of the capacitor C16, and the second end of the capacitor C16 is connected to the pin 5TD- of the optical module body; The TxINP pin of the GNC1250 chip is connected to the first end of the resistor R9 and the first end of the capacitor C15, and the second end of the capacitor C15 is connected to the pin 6TD+ of the optical module body; The VCCT pin of the GNC1250 chip is connected to the first end of the resistor R1; The MDIN pin of the GNC1250 chip is connected to pin1 GND via capacitor C4; The EP pin of the GNC1250 chip is connected to pin1 GND.

3. A 7-pin optical module according to claim 2, characterized in that: The second end of the inductor L1 is connected to the first end of the capacitor C9, and the second end of the capacitor C9 is connected to pin1 GND.

4. A 7-pin optical module according to claim 2, characterized in that: Pin 12 of the transmitter is connected to a first end of a capacitor C12, and a second end of the capacitor C12 is connected to pin1 GND.

5. The 7-pin optical module according to claim 2, characterized in that: The VCCT pin of the GNC1250 chip is connected to the second end of the capacitor C14, and the first end of the capacitor C14 is connected to pin1GND.

6. A 7-pin optical module according to claim 2, characterized in that: A second end of the resistor R14 is connected to a first end of the capacitor C11 , and a second end of the capacitor C11 is connected to pin1 GND.

7. The 7-pin optical module according to claim 2, characterized in that: Pin 16 of the receiver is connected to a first end of capacitor C2, and a second end of capacitor C2 is connected to pin1 GND.

8. The 7-pin optical module according to claim 1, characterized in that: The shell is in an L-shaped structure, and the PCB circuit board of the drive circuit and the BOSA device are assembled into an L-shaped structure and embedded in the shell.

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