What is CMRR? Explain briefly.
- 39 Answers
- 91398 Views
- ABC, Honeywell, NTPC, Wipro, I also Faced
- E-Mail Answers
Answer Posted / s mishra
CMRR is the ratio of differential gain (Av) to common mode
gain (Acm) in a differential amplifier. Av=Vo/V1 - V2.
Acm=Vo/Vcm where Vcm=V1=V2.
Putting these values for CMRR,
CMRR=Av/Acm=Vcm/V1-V2
=V1/V1-V2
=V2/V1-V2
Now, V1-V2=Vcm/CMRR
For an ideal differential amplifier, CMRR=Infinite
Hence V1-V2=0 Or, V1 and V2 are almost at same potential.
If this is clear, please send feedbak to gula033@gmail.com
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
if UT=4v & V LT=-2v the hysteresis voltage is equal to......?
What is a cathode ray oscilloscope (cro)?
Explain why normally control terminal of 555 timer is connected to ground through a 0.01µf bypass capacitor?
What is meant by forced commutation?
Although zener diode is operated in the reverse breakdown region, but it does not burn. Why?
Define what is a rectifier?
i need ongc engineer trainee electronic test questions
What is the difference between E1T1 Card & RRI & FIU.
Why series inductor and l-section filters cannot be used with half-wave rectifiers?
what is the ideal resistanceearth and why?????????????
what is voltage drop?
How many 2-way Combiner use in 4+4+4.
sir, I completed B.E in Electronics and Communication Engineering and ME in Embedded System Technologies. I want to work as a lecture in Government Polytechnic College. Please give the model or previous year question paper.
GET-2013 exam is going to be held on which day(tentatively).
sir,did u send me hpcl syllabus for engg. disiplience & previous year
