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AD8421 AD8429 gain selector switch drawbacks?

Question asked by ffb on Jun 11, 2014
Latest reply on Jun 16, 2014 by krisf

We have been using AD8421 AD8429 in a fixed gain layout with good success. We would like to add some flexibility to our design via gain selection switch.  Possible configuration would be on-off-on SPDT PCB-mounted slider switch (for example DigiKey P/N CKN5051-ND) with common on one of the gain pins and completing gain circuit with either gain 100 or gain 10 SMT resistor, or leaving it open for gain 1. Are there any drawbacks in the amplifier performance with this design?

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