Question

Cc VDD RG1 Uin RD Cc2 + Variable NMOS Transistor ID (?A) 200 ?C (?A/V2) 64 V (V) 0.7 ? (1/V) 0.05 W (µm) 35 L (µm) 0.35 All Caps ? RG2 Rs Cs RL V0 RG1 (M?) 1 RG2 (k?) 600 RS (k?) 8 RL (k?) 1 RD (k?) 5 For this quiz, Vdd is 3V. The operating point of this circuit has been designed such that the gate overdrive voltage (VGS-VT) is 0.25V. Remember, large caps appear as small signal shorts. Show your work on the attached sheet and be careful with units [Give your answer in k? to 4 decimal places, no units, no unit prefixes, no commas. Example: 10k? ? Answer Given: 10.0000] What is the small signal input resistance, Rin, including the gate biasing resistors?

          Cc
VDD
RG1
Uin
RD
Cc2
+
Variable
NMOS Transistor
ID (?A)
200
?C (?A/V2)
64
V (V)
0.7
? (1/V)
0.05
W (µm)
35
L (µm)
0.35
All Caps
?
RG2
Rs
Cs
RL
V0
RG1 (M?)
1
RG2 (k?)
600
RS (k?)
8
RL (k?)
1
RD (k?)
5
For this quiz, Vdd is 3V.
The operating point of this circuit has been designed such that the gate overdrive voltage (VGS-VT)
is 0.25V.
Remember, large caps appear as small signal shorts.
Show your work on the attached sheet and be careful with units
[Give your answer in k? to 4 decimal places, no units, no unit prefixes, no commas.
Example: 10k? ? Answer Given: 10.0000]
What is the small signal input resistance, Rin, including the gate biasing resistors?

Cc
VDD
RG1
Uin
RD
Cc2
+
Variable
NMOS Transistor
ID (?A)
200
?C (?A/V2)
64
V (V)
0.7
? (1/V)
0.05
W (µm)
35
L (µm)
0.35
All Caps
?
RG2
Rs
Cs
RL
V0
RG1 (M?)
1
RG2 (k?)
600
RS (k?)
8
RL (k?)
1
RD (k?)
5
For this quiz, Vdd is 3V.
The operating point of this circuit has been designed such that the gate overdrive voltage (VGS-VT)
is 0.25V.
Remember, large caps appear as small signal shorts.
Show your work on the attached sheet and be careful with units
[Give your answer in k? to 4 decimal places, no units, no unit prefixes, no commas.
Example: 10k? ? Answer Given: 10.0000]
What is the small signal input resistance, Rin, including the gate biasing resistors?

Added by Joseph S.

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