Consider Design Example 10.8. Assume transistor parameters of k ′ n 1 = 100 μ A / V 2 , k ′ n 2 = 105 μ A / V 2 , k ′ n 3 = 95 μ A / V 2 , V T N 1 = 0.38 V , V T N 2 = 0.40 V , V T N 3 = 0.42 V , and λ 1 = λ 2 = λ 3 = 0 . (a) Using the designed values of W / L foreach transistor, determine the values of I R E F and I O . (b) What is the percent changein I R E F and I O from Example 10.8? (Ans. (a) I R E F = 95.93 μ A , I O = 54.43 μ A ;(b) − 4.06 % , − 9.28 % )
Consider Design Example 10.8. Assume transistor parameters of k ′ n 1 = 100 μ A / V 2 , k ′ n 2 = 105 μ A / V 2 , k ′ n 3 = 95 μ A / V 2 , V T N 1 = 0.38 V , V T N 2 = 0.40 V , V T N 3 = 0.42 V , and λ 1 = λ 2 = λ 3 = 0 . (a) Using the designed values of W / L foreach transistor, determine the values of I R E F and I O . (b) What is the percent changein I R E F and I O from Example 10.8? (Ans. (a) I R E F = 95.93 μ A , I O = 54.43 μ A ;(b) − 4.06 % , − 9.28 % )
Consider Design Example 10.8. Assume transistor parameters of
k
′
n
1
=
100
μ
A
/
V
2
,
k
′
n
2
=
105
μ
A
/
V
2
,
k
′
n
3
=
95
μ
A
/
V
2
,
V
T
N
1
=
0.38
V
,
V
T
N
2
=
0.40
V
,
V
T
N
3
=
0.42
V
, and
λ
1
=
λ
2
=
λ
3
=
0
. (a) Using the designed values of
W
/
L
foreach transistor, determine the values of
I
R
E
F
and
I
O
. (b) What is the percent changein
I
R
E
F
and
I
O
from Example 10.8? (Ans. (a)
I
R
E
F
=
95.93
μ
A
,
I
O
=
54.43
μ
A
;(b)
−
4.06
%
,
−
9.28
%
)
N-channel Mosfet compared to P channel mosfetWhich of the following is true?A) It is faster.B) It has a lower input impedance.C) It has a lower noise level.D) none
5V
B
OV
OV
For all the MOSFETS assume Vth=1V
and k =50 mA/V²
R₁ = 4700
Ao
M₁
M₂
B
Indicate and verify the state of each MOSFET and Vo for the following input combinations. Fill
out the table for each assumed state of the MOSFET for every input combination. Use Rds(on)
approximation for linear operation and three significant figures for the voltages.
M1 is assumed to be in saturation.
If Vgs = 2 V, Vds = 4V,
Vds > Vgs - Vth
4>2-1
4> 1 (ok)
Vgs > Vth (2>1)
A
M2 state
M3 state
V.
0
OV
5 V
R₂ = 560Ω
5V
M1 state
M3
Q1. The output characteristic of a typical transistor is shown below, where the
quiescent point is selected on it. This transistor is used in the bias circuit
presented below. Find the suitable values of Rg and Rc to fix the Q-point of the
circuit properly.
+Vcc = 12 V
12-
Is = 70 uA
10-
Ig = 60 uA
8-
Rc
Is = 50 uA
Rs
6-
Ig= 40 uA
4.
Is = 30 uĄ
Is = 20 uA
B = 100
2-
VBE = 0.7 V
0-
-2-
2
4
6
8
10
12
14
16
VCE (V)
Ic (mA)
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