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ADA4897

Question asked by andre-dekker on Jun 14, 2013
Latest reply on Jun 20, 2013 by AnnaFeB

Dear analog engineers,

 

I was looking in the datasheet of ADA4897.

There is an example of a low noise gain selectable amplifier with an extra switch in the datasheet.

In this example you placed an balance resistor, to get a more constant offset voltage.

I was looking at the circuit and I was wondering, Is it correct that the balance resistor is on the S2A line?

My feeling says it should be on the S2B line.

 

Can anyone of you give me a better explanation of how this compensation resistor lowers the offset voltage.

 

With kind regards,

 

Andre

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