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How would voltage noises influence digitalPotentiometer performance?

Question asked by richieqianle on Mar 21, 2014
Latest reply on Apr 10, 2014 by richieqianle

Dear all

 

We are using AD5241 as a programmable resistor for a transimpedance amplifier.

And in our application noise is the main concern. My question is, if the power for the digitalPotentiometer is not clean, will it bring noises to the output of the OpAmp?

 

To think in terms of Operation Principle, it seems that the answer is that the power noise will not bring noise to the transimpedance amplifier. Since the power only helps the IC to move the switch.. However, I am still not sure about this.

 

Any comments will be really appreciated.

 

Best regards,

Richie

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