ADA4500-2 - Resistors around the amplifier

Document created by analog-archivist Employee on Feb 23, 2016
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What resistor values should I use around the amplifier?


ADA4500 has a low voltage noise density of 14.5 nV/√Hz.  Placing a 1KΩ resistor
with thermal noise of 4 nV/√Hz at the input of the amplifier increases total
input referred noise to 15 nV/√Hz; placing 4kΩ resistor at the input increases
the total noise to 21.6 nV//√Hz . It is important to use low value resistors
around a low-noise amplifier.