N
Nemo
- Jan 1, 1970
- 0
Can anyone recommend a good book or web resource where I could learn
about improving the bandwidth or noise performance of high gain op amp
circuits by using more complex configurations?
I've searched for terms like "compound amplifiers" but the examples I've
found show simply how to boost the output power of an op amp, which I'm
not interested in. I've also seen one or two circuits where people have
stuck JFET front ends on op amps, to get low Ein noise, but monolithic
op amp inputs are so good these days I suspect that is not the path to
follow any more.
I wondered about adding a gain block inside my feedback loop, so the
input op amp didn't have to have a gigantic GBW, but experiments along
those lines didn't seem to improve performance. So it looks like I need
a medium-to-advanced level text which will show me how to use novel and
obscure feedback topologies and what their tradeoffs are. Or perhaps
there are search terms I haven't thought of which would widen my
horizons a bit.
TIA,
Nemo
about improving the bandwidth or noise performance of high gain op amp
circuits by using more complex configurations?
I've searched for terms like "compound amplifiers" but the examples I've
found show simply how to boost the output power of an op amp, which I'm
not interested in. I've also seen one or two circuits where people have
stuck JFET front ends on op amps, to get low Ein noise, but monolithic
op amp inputs are so good these days I suspect that is not the path to
follow any more.
I wondered about adding a gain block inside my feedback loop, so the
input op amp didn't have to have a gigantic GBW, but experiments along
those lines didn't seem to improve performance. So it looks like I need
a medium-to-advanced level text which will show me how to use novel and
obscure feedback topologies and what their tradeoffs are. Or perhaps
there are search terms I haven't thought of which would widen my
horizons a bit.
TIA,
Nemo