Operational Amplifier Stability
Part 4 of 15: Loop-Stability Key Tricks and Rules-of-Thumb
by Tim Green
Strategic Development Engineer, Burr-Brown Products from Texas Instruments
Part 4 of this series focuses on loop-stability key tricks and rules-of-thum
Operational Amplifier Stability
Part 1 of 15: Loop Stability Basics
by Tim Green
Strategic Development Engineer, Burr-Brown Products from Texas Instruments Incorporated
Wherever possible the overall technique used for this series will be "definition by ex
IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 33, NO. 8, AUGUST 1998
1249
Estimation Methods for Quality Factors of Inductors
Fabricated in Silicon Integrated Circuit Process Technologies
Kenneth O
Abstract By examining uses of quality (Q) factors for induct
chapter 2: 2.26, 2.28, 2.48, 2.55, 2.84 (Do not turn in, just to help with the review)
Matlab problem (Need to turn in).
This problem will cover the basics of Matlab for DSP, such as plotting and filtering. If
you are confused as to how to use any of the
5/7/2007
11_3 Single-Stage Amp Design
1/2
11.3 Single-Stage
Transistor Amplifier Design
Reading Assignment: pp. 548-557
We now know how to design an amplifier with maximum
transducer gain. Lets look closer at the resulting device.
HO: MAXIMUM GAIN AMPLIFI
5/7/2007
11_2 Stability
1/2
11.2 Stability
Reading Assignment: pp. 542-548 A gain element is an active device. One potential problem with every active circuit is its stability HO: STABILITY
Jim Stiles
The Univ. of Kansas
Dept. of EECS
5/7/2007
Stability
1
5/2/2007
11_1 Two-Port Power Gains
1/2
11.1 Two-Port Power Gains
Reading Assignment: pp. 536-542 Specifying the gain of an amplifier is a bit more ambiguous than you may think. The problem is that there are so many ways to define power! HO: THE POWERS THA
5/2/2007
10_5 Microwave Integrated Circuits
1/2
10.5 Microwave Integrated Circuits
Reading Assignment: pp. 526-531 Read the book! Its very interesting. HO: MICROWAVE INTEGRATED CIRCUITS
Jim Stiles
The Univ. of Kansas
Dept. of EECS
4/30/2007
Microwave Inte
4/30/2007
10_4 RF Transistor Characteristics
1/2
10.4 RF Transistor
Characteristics
Reading Assignment: pp. 522-526
The most important and useful circuit element ever devised is
the transistor.
HO: RF TRANSISTORS
Among its other applications, transistors
4/23/2007
8_5 Stepped Impedance Low Pass Filters
1/2
8.6 Stepped-Impedance
Low-Pass Filters
Reading Assignment: pp. 412-416
Another distributed element realization of a lumped element
low-pass filter designs is the stepped-impedance low-pass
filter.
These
4/20/2007
8_5 Filter Implementation
1/1
8.5 Filter Implementations
Reading Assignment: pp. 405-411
Q: So, we now know how to make any and all filters with
lumped elementsbut this is a microwave engineering course!
You said that lumped elements where diffi
4/18/2007
8_4 Filter Transformations
1/1
8.4 Filter Transformations
Reading Assignment: pp. 398-405
Q: OK, so we now have the solutions for Chebychev and
Butterworth low-pass filters. But what about high-pass,
band-pass, or band-stop filters?
A: Surprisin
4/21/2006
8_3 Filter Design by the Insertion Loss Method
1/2
8.3 Filter Design by the
Insertion Loss Method
Reading Assignment: pp. 389-398
Chapter 8 cover microwave filters.
A microwave filter
A two-port microwave network that
allows source power to be t
4/9/2007
7_8 The 180 Degree Hybrid
1/2
7.8 The 180o Hybrid
Reading Assignment: pp. 352-361 Recall there are two different types of ideal 4-port 3dB couplers: the symmetric solution and the anti-symmetric solution. We know that the symmetric solution is th
4/9/2007
7_6 Coupled Line Directional Couplers
1/2
7.6 Coupled-Line Directional Couplers
Reading Assignment: pp. 337-348
Q: The Quadrature Hybrid is a 3dB coupler. How do we build
couplers with less coupling, say 10dB, 20dB, or 30 dB?
A: Directional coupl
4/16/2009
7_5 The Quadrature Hybrid.doc
1/1
7.5 The Quadrature Hybrid
Reading Assignment: pp. 333-336
There are two different types of ideal 4-port 3dB couplers: the symmetric solution and the anti-symmetric solution. The symmetric solution is called the
4/4/2007
7_3 The Wilkinson Power Divider
1/2
7.3 The Wilkinson Power Divider
Reading Assignment: pp. 318-323
The Wilkinson power divider is the most popular power divider
designs.
It is very similar to a lossless 3dB divider, but has one
additional compon
4/14/2009
7_2 The T Junction power Divider.doc
1/1
7.2 The T-Junction Power Divider
Reading Assignment: pp. 315-318
Three-port couplers are also known as TJunction Couplers, or T-Junction Dividers. HO: THE T-JUNCTION COUPLER We will study three standard T
4/2/2007
7_1 Basic Properties of Dividers and Couplers
1/2
Chapter - 7 Power Dividers
and Couplers
One of the most fundamental problems in microwave
engineering is how to efficiently divide signal power.
1.0 W
0.7 W
Coupler
0.2 W
0.1 W
The simplest microw
3/28/2006
5_8 Tapered Lines
1/1
5.8 Tapered Lines
Reading Assignment: pp. 255-261
We can also build a matching networks where the
characteristic impedance of a transmission line changes
continuously with position z.
We call these networks tapered lines.
H
4/19/2010
5_7 Chebyshev Multisection Matching Transformers
1/1
5.7 Chebyshev Multi-section
Matching Transformer
Reading Assignment: pp. 250-255
We can also build a multisection matching network such that
the function (f ) is a Chebyshev function.
Chebyshe
4/14/2010
5_6 Binomial Multisection Matching Transformers
1/1
5.6 Binomial Multi-section
Matching Transformer
Reading Assignment: pp. 246-250
One way to maximize bandwidth is to construct a multisection
matching network with a function (f ) that is maxima
4/1/2009
5_5 The Theory of Small Reflections
1/1
5.5 The Theory of Small Reflections
Reading Assignment: pp. 244-246
An important and useful approximation when considering multi-section matching networks is the Theory of Small Reflections. HO: THE THEORY
3/14/2007
5_4 The Quarter Wave Transformer
1/2
5.4 The Quarter-Wave Transformer
Reading Assignment: pp. 73-76, 240-243
By now youve noticed that a quarter-wave length of
transmission line ( = 4 , 2 = ) appears often in
microwave engineering problems.
Anot
3/26/2009
5_3 Double Stub Tuning.doc
1/1
5.3 Double-Stub Tuning
Reading Assignment: pp. 235-240
Alternative to the single-stub tuner is the double-stub tuner.
HO: THE DOUBLE-STUB TUNER
Jim Stiles
The Univ. of Kansas
Dept. of EECS
3/27/2009
Double Stub Tun
3/12/2007
5_2 Single_Stub Tuning
1/1
5.2 Single-Stub Tuning
Reading Assignment: pp. 228-235
Q: If we cannot use lumped elements like inductors or
capacitors to build lossless matching networks, what can we
use?
A: Recall that a section of lossless transmi
3/12/2007
section 5_1 Matching with Lumped Elements
1/3
Chapter 5 Impedance
Matching and Tuning
One of the most important and fundamental two-port
networks that microwave engineers design is a lossless
matching network (otherwise known as an impedance
tra
3/19/2009
4_5 Signal Flow Graphs.doc
1/2
4.5 Signal Flow Graphs
Reading Assignment: pp. 189-197
Q: Using individual device scattering parameters to analyze a
complex microwave network results in a lot of messy math! Isn't there an easier way?
A: Yes! We c
3/11/2009
4_4 The Transmission Matrix
1/1
4.4 The Transmission Matrix
Reading Assignment: pp. 183-189
Lets now consider the transmission matrixa matrix that can
only be used to characterize a two-port device.
Q: Only for 2-port devices?!? That doesnt seem
3/4/2009
4_3 The Scattering Matrix
1/3
4.3 The Scattering Matrix
Reading Assignment: pp. 174-183
Admittance and Impedance matrices use the quantities I (z), V (z), and Z (z) (or Y (z). Q: Is there an equivalent matrix for transmission line activity expres