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AD8421 pulse response settling time

Question asked by davorkot on May 30, 2016
Latest reply on Jul 17, 2016 by Emman.A

I am using an AD8421 with a Gain=100 to amplify square wave signals from 5uV to 500uV. Input low pass filter R=470, Cc=10nF, Cd=470nF. Total gain = 10000. Connection between instrumentation amplifier input and probe head is shielded twisted pair.

I notice the difference in pulse response between small and large signals.

What is the reason for overshoot – settling time?

Best regards,

Davorin

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