2. Variable gain amplifier Consider the circuit on the right. Varying VG will let the non-inverting amplifier have a variable gain. Let VTII = 4V, k = 0.5mA V2 1V ≤ v₁ ≤ 2V, and OV VG ≤ 12V. a) Find the range of values for VG that will always operate M1 in the linear region. b) What is the amplifier gain Ay = orange? Vi c) v is a 1-2V, 1kHz triangular wave. Plot vo when VG = 10V. 100 شه Vi VG OM U1 M1 1k

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2. Variable gain amplifier
Consider the circuit on the right. Varying VG will let
the non-inverting amplifier have a variable gain.
Let VTII = 4V, k=
0.5mA
V2
1V v2V, and
OV ≤ VG ≤ 12V.
a)
Find the range of values for VG that will
always operate M1 in the linear region.
b) What is the amplifier gain Av = range?
Vi
c)
v is a 1-2V, 1kHz triangular wave.
Plot vo when V = 10V.
100
VG O-W
Vi o
U1
h
M1
ww
1k
Transcribed Image Text:2. Variable gain amplifier Consider the circuit on the right. Varying VG will let the non-inverting amplifier have a variable gain. Let VTII = 4V, k= 0.5mA V2 1V v2V, and OV ≤ VG ≤ 12V. a) Find the range of values for VG that will always operate M1 in the linear region. b) What is the amplifier gain Av = range? Vi c) v is a 1-2V, 1kHz triangular wave. Plot vo when V = 10V. 100 VG O-W Vi o U1 h M1 ww 1k
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