Hello Jingesh,
As far as recommending an op amp to follow the OPT101 stage here is a starting suggestion, LMV641. It will work nicely with your 9 V battery power because it operates with low current, about 160 uA. It has a 10 MHz gain-bandwidth, and 1 kHz…
Other Parts Discussed in Thread: OPA735 , LMV641 , LMV841 , OPA2188 looking for OPAMP,Vcc max=12v or more,Offset=less then 60uv,Rail 2 rail,Size=SC70
I found the OPA735 which meet these4 parameters but not in SC70 package.
Pete,
Thanks for the reply. I'd considered slew-rate-induced distortion, and remedies, as in buffering the output. The circuit changes the frequency and the gain in unison, so further experiments are a little cumbersome, but doable. I’ll have another…
