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 If for an amplifier the common mode input signal is vc, the differential signal id vd and Ac and Ad represent common mode gain and differential gain respectively, then the output voltage v0is given by
  • a)
    v0 = Ad vd – Ac vc
  • b)
     v0 = – Ad vd + Ac vc
  • c)
     v0 = Ad vd + Ac vc
  • d)
    v0 = – Ad vd – Ac vc
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If for an amplifier the common mode input signal is vc, the differenti...
It is a standard mathematical expression.
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Most Upvoted Answer
If for an amplifier the common mode input signal is vc, the differenti...
The correct expression for the output voltage v0 is:

v0 = Advd + Acvc

This is because the output voltage is a combination of the differential signal (Advd) amplified by the differential gain Ad, and the common mode signal (Acvc) amplified by the common mode gain Ac.
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If for an amplifier the common mode input signal is vc, the differential signal id vdand Acand Adrepresent common mode gain and differential gain respectively, then the output voltage v0is given bya)v0= Advd– Acvcb)v0= – Advd+ Acvcc)v0= Advd+ Acvcd)v0= – Advd– AcvcCorrect answer is option 'C'. Can you explain this answer?
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