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Q#1
Amplifiers
GATE EC 2025
MCQ
+2 marks
-0.66 marks
The identical MOSFETs 
and 
in the circuit given below are ideal and biased in the saturation region. and have a transconductance 
of 5 mS .
The input signals (in Volts) are:
The output signal 
(in Volts) is __________.
Explanation:
Given: MOSFETS and : Ideal, Saturation region
DC Analysis:
AC Analysis-
DC Voltage Source = Short-Circuited
DC Current Source = Open-Circuited
In MOSFET based differential amplifier with two 
input 
and 
,
If polarity of 
is consider such that 
, then is non-inverting terminal and is inverting terminal.
As the circuit is symmetrical,
And, 
Thus, 
Hence, option (d) is correct.
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