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Operational Amplifier Noise Techniques and Tips for Analyzing and Reducing Noise

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ISBN-10: 0750685255

ISBN-13: 9780750685252

Edition: 2012

Authors: Art Kay

List price: $69.95
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Arthur Kay's exciting new publication is a must have for practicing, professional electrical engineers. This comprehensive guide shows engineers how to design amplifiers and associated electronics to minimize noise, providing tricks, rules-of-thumb, and analysis to create successful low noise circuits. Forget the classical textbook traps of equations, virtual grounds, and a lot of double-speak, the novel but educational presentation used here uses definition-by -example and straight-forward analysis. This is the ultimate reference book for engineers who don't have the time to read, since the concepts are presented in detailed pictures and then repeated in the text for those who like both.Operational amplifiers play a vital role in modern electronics design. Today, op amps serve as the interfaces between the digital world of microprocessors, microcontrollers, and other digital circuits and the analog "real world". If an analog signal must be amplified, conditioned, filtered, or converted to be used by a digital system, an op amp is almost always involved. Noise is an unwanted signal that will corrupt or distort the desired signal, and veteran engineers as well as new college graduates are faced with a lack of experience in noise analysis for operational amplifiers. Using his decades of experience, the author has created a publication that is packed with essential information, while still being accessible to all readers.* Clear, definition-by-example presentation allows for immediate use of techniques introduced;* Tricks and rules-of-thumb, derived from author's decades of experience;* Extreme use of figures for rapid absorption of concepts;* Concise text explains the key points in all figures;* Accessible to all types of readers;* Analysis and design of low-noise circuits using op amps, including design tradeoffs for low-noise;* Desktop reference for designing low-noise op amp circuits for novice to experienced engineers;* Accurate measurement and prediction of intrinsic noise levels, using analysis by hand and SPICE simulation
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Book details

List price: $69.95
Copyright year: 2012
Publisher: Elsevier Science & Technology Books
Publication date: 2/23/2012
Binding: Hardcover
Pages: 248
Size: 6.00" wide x 9.00" long x 0.50" tall
Weight: 1.474
Language: English

Introduction and Review of Statistics
Time Domain View of Noise
Statistical View of Noise
Frequency Domain View of Noise
Converting Spectral Density to RMS Noise
Chapter Summary
Further Reading
Introduction to Op-Amp Noise
Op-Amp Noise Analysis Technique
Introducing the Op-Amp Noise Model
Noise Bandwidth
Broadband RMS Noise Calculation
1/f RMS Noise Calculation
Combining Flicker and Broadband Noise
Noise Model for Example Circuit
Noise Gain
Converting Current Noise to Voltage Noise
Including the Effect of Thermal Noise
Combining All the Noise Sources and Computing Peak-to-Peak Output Noise
Derivation of Key Noise Formulas
Chapter Summary
Further Reading
Op-Amp Noise Example Calculations
Example Calculation #1: OPA627 Noninverting Amplifier
Compute the Noise Bandwidth
Get Key Noise Specifications from the Data Sheet
Compute Total Op-Amp Voltage Noise Contribution
Compute Total Thermal Noise Contribution
Combine All the Noise Sources and Compute Peak-to-Peak Output
Example Calculation #2: Two-Stage Amplifier
Chapter Summary
Further Reading
Introduction to Spice Noise Analysis
Running a Noise Analysis in TINA Spice
Test the Op-Amp Model Noise Accuracy
Build Your Own Noise Model
Use TINA to Analyze the Circuit Given in Chapter 3
Feedback Capacitor Simulation Example
Chapter Summary
Further Reading
Introduction to Noise Measurement
Equipment for Measuring Noise: True RMS DMM
Equipment for Measuring Noise: Oscilloscope
Equipment for Measuring Noise: Spectrum Analyzer
Verify the Noise Floor
Account for the Noise Floor
Measure Example Circuit #1 Using a True RMS Meter
Measure Example Circuit #1 Using an Oscilloscope
Measure Example Circuit #1 Using a Spectrum Analyzer
Measure Low Frequency Noise for the OPA227
Offset Temperature Drift vs. 1/f Noise in Low-Frequency Noise Measurement
Chapter Summary
Further Reading
Noise Inside the Amplifier
Five Rules of Thumb for Worst-Case Noise Analysis and Design
Detailed Mathematics for Bipolar Noise
Detailed Mathematics for FET Noise
Simplified Physical Connection Inside Amplifier
Chapter Summary
Further Reading
Popcorn Noise
Review of 1/f and Broadband Noise
What Is Popcorn Noise
What Causes Popcorn Noise?
How Common Is the Problem?
Popcorn Noise-Current or Voltage Noise?
Bench and Production Test for Voltage Popcorn Noise
Bench and Production Test for Current Popcorn Noise
Analyzing the Popcorn Noise Data
Setting Limits to a Popcorn Noise Test
When Is Popcorn Noise a Concern?
Chapter Summary
Further Reading
1/f Noise and Zero-Drift Amplifiers
Zero-Drift Amplifiers
Zero-Drift Amplifier Spectral Density Curve
Low-Frequency Noise
Measuring Low-Frequency Noise
Chapter Summary
Further Reading
Instrumentation Amplifier Noise
Short Review of Three Amp Instrumentation Amplifier
Noise Model of Three Amp Instrumentation Amplifier
Hand Analysis of Three Amp Instrumentation Amplifier
Simulation of Three Amp Instrumentation Amplifier
Reducing Noise with Averaging Circuit
Chapter Summary
Further Reading
Photodiode Amplifier Noise
Introduction to Photodiodes
The Simple Transimpedance Amplifier
Photodiode Current Noise
Thermal Noise from R<sub>f</sub>
Noise from Op-amp Voltage Noise Source
Total Noise (Op-amp, Diode, and Resistance)
Stability of Transimpedance Amplifier
Chapter Summary
Further Reading
Photodiode Noise Amplifier Example Results
Photodiode Example Specifications
Photodiode Current Noise Calculations
Op-amp Specifications
Op-amp Voltage Noise Calculations
Thermal (Resistor) Noise Calculations
Op-amp Current Noise Calculations
Total Noise for Example Transimpedance Amplifier
Spice Analysis of Example Circuit
Measuring the Noise for the Example Transimpedance Amplifier
Chapter Summary
Further Reading
Answers to Questions