August
2004, Issue 169
Test Your
EQ:
|
Answer
7—The
op-amp sees a significant common-mode swing on its inputs,
equal to the VP input attenuated by the voltage
divider formed by RX and RY. Therefore,
the circuit’s CMRR is going to be limited by the device
CMRR improved slightly by this attenuation.
Contributor:
David Tweed
