An all-CMOS diff-amp, including the current source circuit, with the configuration in Figure 11.32 is to be designed to have a differential-mode gain of A d = 240. The bias voltages are V + = 3 V and V − = − 3 V . The total power dissipation in the circuit is to be limited to 0.8 mW . Assume the NMOS transistor parameters are V T N = 0.4 V , k n ′ = 100 μ A / V 2 , and λ n = 0.02 V − 1 . Assume PMOS transistor parameters of V T P = − 0.4 V k p ′ = 40 μ A / V 2 , and λ p = 0.03 V − 1 .
An all-CMOS diff-amp, including the current source circuit, with the configuration in Figure 11.32 is to be designed to have a differential-mode gain of A d = 240. The bias voltages are V + = 3 V and V − = − 3 V . The total power dissipation in the circuit is to be limited to 0.8 mW . Assume the NMOS transistor parameters are V T N = 0.4 V , k n ′ = 100 μ A / V 2 , and λ n = 0.02 V − 1 . Assume PMOS transistor parameters of V T P = − 0.4 V k p ′ = 40 μ A / V 2 , and λ p = 0.03 V − 1 .
Solution Summary: The author explains the design parameters of the CMOS differential amplifier having a current source.
An all-CMOS diff-amp, including the current source circuit, with the configuration in Figure 11.32 is to be designed to have a differential-mode gain of
A
d
=
240.
The bias voltages are
V
+
=
3
V
and
V
−
=
−
3
V
.
The total power dissipation in the circuit is to be limited to
0.8
mW
. Assume the NMOS transistor parameters are
V
T
N
=
0.4
V
,
k
n
′
=
100
μ
A
/
V
2
,
and
λ
n
=
0.02
V
−
1
.
Assume PMOS transistor parameters of
V
T
P
=
−
0.4
V
k
p
′
=
40
μ
A
/
V
2
,
and
λ
p
=
0.03
V
−
1
.
common gate bias
a)Calculate the resistances, currents and voltages,with Transistor J111 N
Refer to the differential amplifier circuit shown below .
Determine the quiescent DC voltage at the collector terminal of each transistor assuming VBE of two transistor are negligible.
What will be the quiescent DC values if VBE is taken to be 0.7 V.
NOTE: FOR ALL CIRCUITS SHOWN IN THIS QUIZ ASSUME THAT: β= 100 (for all transistors) ; Early voltage equal to infinity.
3. - For the circuit shown in figure C, determine the value of the gainAv = vo/vs
Note: It is known that Vcc = 20v
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