> To analyze this, I guess I will need a non-ideal op-amp model.  What
> is the important parameter to include?  Finite gain?  Offset voltage?

Hi Mark,

You should modify the closest existing model you have and work from there
rather than adding to an ideal model.

If the shunt resistor is within an order of magnitude of the input
resistor I expect you will be able to get decent performance if your
requirements aren't too stringent and you use a quality opamp.

Cheers,

Bob


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