throbscottle
Well-Known Member
I want to create a single-sided input amplifier with very high input impedance (it is fed off a 10M divider), precise gain, low noise and low drift. Bandwidth up to 1MHz would be nice, but 100's of KHz will do. I started off looking at the CA3160, but got onto looking at instrumentation amps, since this is for a voltmeter which should be able to resolve 3mV.
Comparing data sheets, for my purposes there doesn't seem to be much to choose between the op-amp and any of the in-amps I can afford.
So I was wondering, with the inverting input grounded in both cases, is there any advantage in using an in-amp, or had I better stick with using an op-amp, and if this is the case, is there anything more suitable than the CA3160?
TIA
Comparing data sheets, for my purposes there doesn't seem to be much to choose between the op-amp and any of the in-amps I can afford.
So I was wondering, with the inverting input grounded in both cases, is there any advantage in using an in-amp, or had I better stick with using an op-amp, and if this is the case, is there anything more suitable than the CA3160?
TIA