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Hi Ella,
I think U3A/B/C/D/Q1 will have some delay because of the limited bandwidth. But I am not familiar with amplifier and BW. Maybe you can create one more threat to ask for expert responsible for OPA4377 for help.
Best Regards,
Eric Yue
Thanks Helen. I'd like to minimize complexity and keep BOM cost as low as possible (the OPA4377 are $3.98ea in Aus). Is it possible to remove the amplifier and connect the output of the MCU DAC directly to the gate of Q1? What are the risks of a direct…