Abstract: A high-speed TIA anti-5G WIFI electromagnetic interference method includes the steps of: stacking a high-voltage capacitor C9 and a resistor R11 for constructing a filter circuit on a bare DIE chip of TIA; splitting C9 into two parallel filter capacitors C91 and C92, which satisfy C9=C91+C92, C91=C92; constructing differential output to cancel signal interference; constructing electromagnetic interference that cancels out lens leakage by stacking avalanche photodiode APD, C91 and gold-plated pad on the vertical axis close to the bare DIE chip, and connecting to the pads through gold wires; stacking R11 and C92 on the vertical axis between pins VDD and VAPD, connecting R11 to C91 through gold wire No. 1, connecting C92 to pin VAPD through gold wire No. 2, the gold wire No. 1 and the gold wire No. 2 form a 90° angle to offset the electromagnetic interference leaked by the lens.

Abstract: A high-speed TIA anti-5G WIFI electromagnetic interference method includes the steps of: stacking a high-voltage capacitor C9 and a resistor R11 for constructing a filter circuit on a bare DIE chip of TIA; splitting C9 into two parallel filter capacitors C91 and C92, which satisfy C9=C91+C92, C91=C92; constructing differential output to cancel signal interference; constructing electromagnetic interference that cancels out lens leakage by stacking avalanche photodiode APD, C91 and gold-plated pad on the vertical axis close to the bare DIE chip, and connecting to the pads through gold wires; stacking R11 and C92 on the vertical axis between pins VDD and VAPD, connecting R11 to C91 through gold wire No. 1, connecting C92 to pin VAPD through gold wire No. 2, the gold wire No. 1 and the gold wire No. 2 form a 90° angle to offset the electromagnetic interference leaked by the lens.

Abstract: A DFB laser DC-coupled output power configuration scheme with adjustable voltage difference. utilizes an external or internal power configuration unit to provide two electric DC power supplies with a fixed voltage difference for the transmitting unit TX of the DFB laser and the optical transceiver integrated chip, and at the same time optimizes the transmitting unit TX. The optimization scheme is that: the transistors in the transmitting unit TX are all low-voltage high-speed tubes, the transmitting unit TX includes a negative capacitance structure composed of capacitors C1 and C2, serving as an auxiliary structure for improving bandwidth. After optimization, the minimum voltage of the power supply voltage port TVCC of the transmitting unit TX is 2.7V and the problems that the output eye diagram is severely cracked and cannot be used when the traditional DFB laser configuration scheme with an external 3.3V power supply is tested at high temperature are solved.

Abstract: A DFB laser DC-coupled output power configuration scheme with adjustable voltage difference. utilizes an external or internal power configuration unit to provide two electric DC power supplies with a fixed voltage difference for the transmitting unit TX of the DFB laser and the optical transceiver integrated chip, and at the same time optimizes the transmitting unit TX. The optimization scheme is that: the transistors in the transmitting unit TX are all low-voltage high-speed tubes, the transmitting unit TX includes a negative capacitance structure composed of capacitors C1 and C2, serving as an auxiliary structure for improving bandwidth. After optimization, the minimum voltage of the power supply voltage port TVCC of the transmitting unit TX is 2.7V and the problems that the output eye diagram is severely cracked and cannot be used when the traditional DFB laser configuration scheme with an external 3.3V power supply is tested at high temperature are solved.

Abstract: A DFB laser DC-coupled output power configuration scheme belongs to the field of laser drivers in optical communication integrated circuits. The present invention solves the existing problems in the conventional DFB laser power supply configuration scheme. The power configuration scheme of the present invention utilizes an external or internal power configuration unit to provide two electric DC power supplies with a fixed voltage difference for the transmitting unit TX of the DFB laser and the optical transceiver integrated chip, and at the same time optimizes the transmitting unit TX. The optimization scheme is that: the transistors in the transmitting unit TX are all low-voltage high-speed tubes, the transmitting unit TX includes a negative capacitance structure composed of capacitors C1 and C2, serving as an auxiliary structure for improving bandwidth. After optimization, the minimum voltage of the power supply voltage port TVCC of the transmitting unit TX is 2.7V.

Abstract: A DFB laser DC-coupled output power configuration scheme belongs to the field of laser drivers in optical communication integrated circuits. The present invention solves the existing problems in the conventional DFB laser power supply configuration scheme. The power configuration scheme of the present invention utilizes an external or internal power configuration unit to provide two electric DC power supplies with a fixed voltage difference for the transmitting unit TX of the DFB laser and the optical transceiver integrated chip, and at the same time optimizes the transmitting unit TX. The optimization scheme is that: the transistors in the transmitting unit TX are all low-voltage high-speed tubes, the transmitting unit TX includes a negative capacitance structure composed of capacitors C1 and C2, serving as an auxiliary structure for improving bandwidth. After optimization, the minimum voltage of the power supply voltage port TVCC of the transmitting unit TX is 2.7V.