Exam 1
ECE 4530
Prof. Apsel Fall 2014
Instructions: Please read all questions thoroughly before
providing answers. Answer all questions on the paper provided.
Box your final answers, and dont forget t
Lectures 1012
Biasing, a little on variation,
passive current mirrors
1
10/12/2016
ECE 4530, Prof Alyosha Molnar,Cornell University
Biasing and Process Variation
(take 1)
For a given parameter,
ever
Lecture 21,22
Loading between circuits in FB
Phase and Gain Margin
Compensation
11/13/2016
ECE 4530, Cornell Univ. Prof.
Molnar
1
FB in real Opamp circuits
+
Vin
ZoutA Vout
ZinA

VFB
Av
+
Av
ZinB
Bv
Lectures 23, 24
noise
11/17/2016
ECE 4530, Prof. Molnar, Cornell Univ.
1
Gaussian white noise
Most common form of noise:
White:
Voltage (or current) at each time
point is independent of each other v*
ECE 4530 Homework Assignment 1 (review): Due September 4
Reminder: you must cite any other students you worked with (for instance, this
assignment reflects a collaboration with Prof. Molnar). Late hom
Homework3
ECE 4530
Due Oct 1.
The goal of this homework is to go through the design of a simple amplifier, similar to
what would be needed to drive a highbandwidth signal off chip onto a transmission
ECE 453 Homework Assignment 5
Due Oct. 30
Topics: OpAmps
Active Current Mirrors
A
B
A
Figure 1 Intersil Low Power CMOS Operational Amplifier
The figure above shows a diagram from a data sheet for a c
ECE 4530 Integrated Circuit Design
Lab #2a Analysis of SingleStage Amplifiers
Date: Week beginning Sept 21, 2014.
Report due: October 13 at 5pm, along with part b.
Objectives:
1. Get experience with
Exam 2
ECE 4530
Prof. Apsel Fall 2014
Instructions: Please read all questions thoroughly before
providing answers. Answer all questions on the paper provided.
Box your final answers, and dont forget t
Lecture 1718
Increased Range OpAmps:
Mirrored, Folded Cascode
Inverters as Opamps
Differential OpAmps, CMFB
11/9/2016
ECE 4530, Cornell Univ. Prof.
Molnar
1
Problem with telescopic
VDD
M3
Vcascp
M
Lectures 23, 24
noise
11/25/2016
ECE 4530, Prof. Molnar, Cornell Univ.
1
Gaussian white noise
Most common form of noise:
White:
Voltage (or current) at each time
point is independent of each other v*
Lecture 1920
Feedback
11/9/2016
ECE 4530, Cornell Univ., Prof.
Molnar
1
General Feedback Formulation
+

f
y
A(s)
B(s)
+
A

u
e
R1
RF
11/9/2016
Input is u
Output is y
e = uf
y = A(s)e
f = B(s)y
4530, Lecture 2
Review: a little more Bode,
Amplifiers, Opamps
1
1/23/2013
ECE 4530, Cornell University, Prof. Alyosha Molnar
How to make a flat 4pole filter
2 real poles (at =
2100krad/s)
2 compl
4530, Lecture 3+4
Summary
1
9/5/2016
ECE 4530, Cornell University, Prof. Alyosha Molnar
PN junctions
Silicon is either doped to be:
ntype (more electrons than holes)
or
ptype (more holes than ele
4530, Lecture 5
Summary
9/10/2016
ECE 4530, Cornell University Prof Alyosha Molnar
1
Subthreshold and velocity
Saturation
For VGS<VTH+100mV
For short channels, large
VGS, VDS
Square law breaks down
Lecture 6
Alyosha Molnar
9/10/2016
ECE 4530, Cornell University Prof Alyosha Molnar
1
Source Follower (common Drain)
If bulk grounded:
VDD
gm
A
g m g mb
Vin
Vout
Z out
RL
1
g m g mb
vin
gmb
g m g m
Lecture 9 summary
Manufacturing, layout
10/12/2016
ECE 4530, Prof. Molnar Cornell U
1
How to manufacture an NFET*
PR
p Si
mask
PhotoLithography
add photoresist
Expose through mask:
miniaturizes w
Lecture 16
Analyzing big nasty circuits
10/21/2016
ECE 4530, Prof. Alyosha Molnar,
Cornell Univ
1
An aside: what to ignore?
Complex circuit
analysis is mostly
about intelligently
ignoring things in
s
Lecture 26
Nonlinearity: piecewise linear,
power series
General problem
So far have tackled
nonlinearity as a
limitation on signal
magnitude
Input range
Output range
Can approximate
with piecewise