Difference Amp with Common and Differential Mode Input

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This circuit can be used to explore the effects of resistor mismatch on common mode gain. The voltage source in the bottom left sets the common-mode voltage (v_CM), and the source in the middle sets the differential voltage (v_diff). The two controlled sources create + and - v_diff/2. See how adding resistor mismatch leads to common mode gain by plotting the opamp output.

published 1 year ago

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