Deadline: Sep 26th
Problem 1 (8 points). For the current source circuit shown below the W/L of each transistor is
specified (see Fig.). Ignore channel length modulation and body effects in all of the transistors.
First assume that all the trans
ECE 455, Due: Oct 3rd
Design Homework Threshold Reference Current Source
A threshold reference current source will be designed for this homework. For the introduction of
current source in general as well as threshold reference, please refer to your cl
Problem1 (20 points):
Due: Thursday Oct 24th
The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the le again. If the red x still
Due date Thursday Oct 31st
ECE 455 Homework 6
Problem 1 (8 points): For the operational amplifier circuit shown below, assume that nCox=0.2mA/V2,
pCox=0.1mA/V2, n= p=0.1V-1 and Vtn= -Vtp=0.5V.
(i) Find the drain currents of transistors Q7, Q12 and Q15 (2
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Due date: Oct 15th
HW4 - ECE455
Assume a simple high frequency model for NMOS
transistors in this problem as depicted in the figure.
For the following NMOS amplifier circuit, assume
ideal mos operation and ignore channel length
Bank of Questions, Question3 of Midterm 2
P1. Draw a parasitic insensitive integrator based on switched capacitor circuits and explain how
it works. Explain how the effect of parasitic capacitances on the circuit is cancelled.
P2. Draw a fully-dif
Deadline: Sep 19th
Problem 1 (4 Points). Determine gm and rds of the small-signal parameters of a MOS transistor
when the transistor is operating in the following regimes:
(a) ideal MOS saturation with channel length modulation (note that the e
Guidelines for ECE455 Project
You are required to form groups of 3 students and choose one of the following topics for your project.
A low noise high bandwidth CMOS operational amplifier.
A high speed CMOS comparator.
An 8-bit CMOS flash A/
ECE 455, Due: Sep 27th
For tsmc20Nrf.m, n*Cox = 484 uF/(V*sec), Vtn = 0.45V;
For tsmc20Prf.m, p*Cox = 55.5 uF/(V*sec),Vtp = -0.46V.
Part 1. Threshold Reference Current Source
Figure 1: Threshold reference current mirror
All transistors are wo
Chapter 2. Integrated Single-Stage CMOS Amplifiers and Current
In this chapter, we review basic single stage CMOS amplifiers, namely Common Source (CS),
Common Drain (or Source Follower), Common Gate (CG) and Cascode configurations. Both
Chapter 4. Basic CMOS Operational Amplifiers
Integrated circuit technology has made it possible to achieve controlled fabrication of transistors
with closely matched performance. As a result, differential amplifiers based on perfectly
symmetric CMOS trans
Chapter 7. Sample and Hold Circuits
In this chapter, sample and hold (and track and hold) circuits implemented in CMOS technology
are discussed. Sample & Hold circuits find applications in successive approximation A/D
converters, LCD and LED display, in c
Chapter 3. Noise in Integrated Circuits
Noise is an important property of electronic circuits that usually limits the lower limit of signal
detection. Not only the input signal contains noise, the circuit itself adds an additional noise
because devices su
Chapter 6. CMOS Comparators
In this chapter, high-speed analog comparator circuits implemented in CMOS technology are
presented. Obviously an OpAmp can serve as an analog comparator as shown in Fig. 6.1.
Unfortunately an OpAmp comparator is too slow. Addi
Chapter 5. Advanced Current Sources and Operational Amplifiers
In this chapter, advanced current sources and advanced operational amplifiers are presented.
Advanced operational amplifiers are designed to achieve high bandwidth and improved slew-rate
Chapter 9. Digital to Analog (D/A) and Analog to Digital (A/D)
In this chapter, basic operation principles of digital to analog (D/A) and analog to digital (A/D)
converters are presented.
Ideal D/A Converters
Assume an N-bit digital input defin
Chapter 8. Switched Capacitor Circuits
In this chapter, basic operation principles and simple applications of switched capacitor circuits
are discussed. Switched capacitor circuits find applications in low-frequency precision amplifiers
and filters. A swi
Profess Saeed Mohamm
Chapter 1. CMOS Technology and Device Physics
CMOS technology has dominated the electronic industry for the past 30 years. The main
advantages of CMOS t