Name:
Common Source Amplifier DC response
Calculated Signal Swing
4.32V
Calculated Power Consumption
276uW
Calculated Voltage Gain (Vo =
Vdd/2)
Simulated Voltage Gain (Vo =
Vdd/2)
- 59.29
-48.87
Two stage amplifier
Calculated voltage gain (maximum)
-41.36
ECE 407
Homework 5 SOLUTIONS
1) Determine the voltage gain of the following amplifier. Hint there is gain booting
Vdd
Vdd
Vdc2
M 4
M 6
M 3
Vdc3
M 5
Vo
Amplifier
-AvSMALL=-gm6(ro5|ro6)
Vdc1
M 2
V in
M 1
Gm gm1
Ro RoUP | Ro DOWN ro 4 ( gm3 ro3 ) Av SMALL |
ECE 407
Homework 3
Source Followers Common Gate Amplifiers, Cascode Amplifier and Pattern Matching
1) Verify that a natural source follower without body effect (with a dc current source load) van be described by:
Gm = gm, Ro 1/gm, Ri = and Av1
NMOS
PMOS
V
ECE 407
Homework 2
1) For the current mirror shown assume both transistors are the same size, Vdd = 3.3V, L = 1um, VTP = -.5V and
uCox = 100uA/V2\
Vdd
Vdd
Va
M 2
M 1
Vo
16uA
a) Determine W so that Vdsat = .4V
16u 1
2
W
(100u )Vdsat 2 W 2u
L
b) Determine t
ECE 407
Homework 4
1)
For the amplifier below
a) Determine the amount of time for the output to slew up one volt and the corresponding
slew rate
b) Determine the amount of time for the amplifier to slew down one volt and the
corresponding slew rate.
3V
25
B. OLSON
ECE 407
Homework 1
Transistor sizing
For this homework unless told otherwise refer to the AMI .5um process handout.
Assume that VTP = -.94V and VTN = .79V. Assume that all transistors are biased in saturation.
1) Determine the W/L ratio needed to