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Instrumentation amplifer noise calculations

Question asked by JKK on Sep 27, 2011
Latest reply on Sep 28, 2011 by JKK

Hi,

 

I have a question regarding noise calculations for AD8221 instrumentation amplifier but the question probably relates to all resistor-programmable instrumnentation amplifiers. Should the thermal noise of the gain setting resistor be included as a separate input-referred noise source or is this somehow already taken into account in the noise spec?

 

Thanks

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