Another op amp + BUF634 HPA

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edwtsui

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Joined 2017
Just finished designing my op amp HPA, feel free to comment.

  • DC servo output resistor changed to 47k as suggested by sgrossklass
  • Leave a place for compensation cap in case required
  • Two JFET form a CCS and bias the op amp to class A

My power supply is sigma22 which gives +/- 15V to the amplifier PCB. I am going to use 100uF parallel with 0.1u film cap for power rails bypassing, is it enough?
 

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