A CMRR of 10,000 means that the op-amp provides that:
A) the common mode input is greatly reduced.
B) $\mathrm { Av } ( \mathrm { d } ) / \mathrm { A } _ { \mathrm { C } } \mathrm { m }$ =10,000 .
C) the differential input is greatly amplified.
D) all of these.

Question

A CMRR of 10,000 means that the op-amp provides that:
A) the common mode input is greatly reduced.
B) $\mathrm { Av } ( \mathrm { d } ) / \mathrm { A } _ { \mathrm { C } } \mathrm { m }$  =10,000 .
C) the differential input is greatly amplified.
D) all of these.

Quizplus · Accepted Answer

CMRR (Common Mode Rejection Ratio) of 10,000 indicates that the op-amp is highly effective at reducing common mode signals (A), has a differential gain to common mode gain ratio ($A_v(d)/A_{Cm}$) of 10,000 (B), and is very good at amplifying differential inputs (C). Thus, all of these statements are correct in the context of a high CMRR value.

A CMRR of 10,000 Means That the Op-Amp Provides That Av(d)/ACm\mathrm { Av } ( \mathrm { d } ) / \mathrm { A } _ { \mathrm { C } } \mathrm { m }Av(d)/AC​m

A CMRR of 10,000 Means That the Op-Amp Provides That $\mathrm { Av } ( \mathrm { d } ) / \mathrm { A } _ { \mathrm { C } } \mathrm { m }$