What is CMRR? Explain briefly.
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Answer Posted / puneet
CMMR is abbreviated as common mode rejection ratio.It
rejects the common voltage basically noise when an op-amp is
working in common mode having common input terminals.
For an ideal op-amp CMRR should be infinite.It is measured
in decibels.
CMRR=Ac/AD
where,
Ac=gain in common mode configuration
Ad=gain in differential mode
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