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General Question- EMI/EMC Protection for Differential Amps

Question asked by Wsch on Aug 9, 2013
Latest reply on Sep 10, 2013 by Jason.B

There are plenty of networks I use to protect Instrumentaton Amps from EMI, Transients, and ESD--some right out of app notes without any modification; I have some favorites because they work well with ESD, EFT, Conducted Immunity, and Radiated Immunity tests with cables feeding the Instrumentations Amps.

 

Unfortunately, they are not much good for differential amps because they add resistance, or because the input impedances of the differential amp are very low "out-of-the-box".

 

Are they any general app notes or recommendations for EMI/EMC protection of differential amplifier inputs?  AD has published a few for Instrumentation Amps....

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