I took another pass at this. Here is what I have now:
Attachment #1: Composite amplifier design to suppress voltage noise of PA91 at low frequencies.
Attachment #2: Transfer function from input to output.
Attachment #3: Top 5 voltage noise contributions for this topology.
Attachment #4: Current noises for this topology, comparison to current noise from fast path and slow DAC noise.
Attachment #5: LISO file for this topology.
Looks like this will do the job. I'm going to run this by Rich and get his input on whether this will work (this design has a few differences from Rich's design), and also on how to best protect from HV incidents. |