Bidirectional line driver circuit composed of OPA2662

As shown in the figure is a bidirectional line driver circuit composed of OPA2662. This circuit uses the internal dual-channel OTA of OPA2662 to form two channel current output driver circuits, one of which is used as a transmitting driver and the other as a receiving driver. The switching between transmitting and receiving is controlled by the enable terminal EN. When pin 3 (EN1) is high level (pin 6 EN2 is low level at this time), the circuit is in the receiving state, the input signal enters pin 2 through the cable, and is output by pin 14 after amplification; when pin 6 is high level When the signal is flat (3-pin EN1 is low level at this time), the circuit is in the sending state, and the input signal enters pin 7 through the cable, and is output from pin 11 after amplification.