2.66 Consider the difference amplifier of Fig. 2.16 with the two input terminals connected together to an input common-mode signal source. For R2/R1 = R4/R3, show that the input common-mode resistance is (R3 + R4) || (R1 + R2)
2.66 Consider the difference amplifier of Fig. 2.16 with the two input terminals connected together to an input common-mode signal source. For R2/R1 = R4/R3, show that the input common-mode resistance is (R3 + R4) || (R1 + R2)
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