Analog-digital video tape recording amplifier circuit composed of dual broadband transconductance operational amplifier OPA2662

As shown in the figure, this is an analog-digital video tape recording amplifier circuit composed of OPA2662. The data balanced signal is input into OPA2662, and the push-pull output is formed by the internal dual-channel OTA of OPA2662. The push-pull output load is the analog-digital video head, and the head records the signal on the tape. The TTL level input recording/playback selection circuit, the output control enable terminal EN1 and EN2, can control the channel to be turned on or off. When EN is high, the control channel is turned on, and when EN is low, the control channel is turned off. When the control channel is turned on, the circuit is in the "recording" state, and the signal is input and recorded on the tape. When the control channel is turned off, the circuit is in the "playback" state, and the signal on the tape is read by the head and amplified by the playback amplifier and output. The voltage on the load meets 8Vp-p.