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Test Your EQ #147— Answer

Answer 2
Assuming Vin = Vi1 – Vi2, the differential-mode gain is given by:

Ad = DVout
DVin
= [0.4 – (–0.1)]
[0.02 – 0]
= 0.5
0.02
= 25
The offset referred to the input is:
Voff(in) = Voff(out)
Ad
= –0.1
25
= –4 mV

Contributor: Naveen PN

Published: October-2002

   

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