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How to use the Feedback (FB) and Power Down (PD) Pins of ADA4857 and ADA17

Question asked by sadeniji on Apr 29, 2016
Latest reply on May 18, 2016 by harryh


I am trying to Configure an ADA4857-2 as an Instrumentation amplifier and I have simulated the circuit in ADS using the model and it is working fine. Now that I am making the schematics,I have encountered two pins which I do not know how to use and they are FB and PD pins.

 

I was thinking I need to instead of connecting my feedback path to the Output pin, I have to connect it to FB pin and I can just connect PD to ground. Is that correct?

 

Lastly,I would also like to ask a question on how to connect the common mode voltage to ADA4857-2

 

 

Thanks

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