Showing posts with label circuit design. Show all posts
Showing posts with label circuit design. Show all posts

2/21/2012

Optimizing Op Amp Performance Review

Optimizing Op Amp Performance
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This book is an excellent treatment of this subject that is intuitive and not overly theoretical. It draws together a lot of material available in magazines and on vendor websites, but not available in book format. The author starts with the traditional op amp symbol, and derives Black's classic feedback model for various configurations (inverting, non-inverting, etc) of the op amp. A generalized expression for the closed loop gain is eventually obtained where the numerator is the ideal closed loop gain, and the denominator contains the frequency response that can be analyzed with the aid of the Bode plot. Practical design issues are logically addressed using this simple formalism including bandwidth, phase compensation for input and output capacitances, power supply by-pass requirements, distortion, etc. Care is taken to indicate what conclusions apply to all op amp configurations, and which address specific design issues. As a writer, the author is very pointed in his approach and thorough with his analyses; and will not win any awards for fiction suited for a general audience. However, I highly recommend the book to anyone trying to learn how to use op amps in a systematic way.

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A new approach for maximizing op amp behavior in circuit designs- without extensive mathematical analysis This guide from one of the world's leading op amp designers takes you through the causes of op amp performance problems- such as oscillations, errors, bandwidth limitations, noise, and distortion - and shows you how to develop simple models and design equations that lead to optimal results. You'll find detailed solutions for feedback conditions; power supply bypass; phase compensation; reducing radiated interference; and measuring distortion.Combining intuitive and mathematical evaluations, this get-it-done tool packs varied examples that enable you to optimize a range of performance characteristics.

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1/17/2012

Analog and Digital Filter Design, Second Edition (EDN Series for Design Engineers) Review

Analog and Digital Filter Design, Second Edition (EDN Series for Design Engineers)
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It is a nice, easy to read description of analog and digital filtering. Nevertheless, I think that the digital filtering chapters are not enough to explore the potentialities of digital filters and the book would benefit from more practical project examples.
On the overall, it is good for a first approach to filtering, but the reader might need something else for a deeper view of the topic.

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11/29/2011

Analog Circuits (World Class Designs) Review

Analog Circuits (World Class Designs)
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World class? Here's a review of some of the chapters: Review of Feedback systems....Basic Operation Amplifier Topologies....review of passive components and a case study in PC board layout, 4 chapters if you can believe it--on filter design, a chapter on noise....all of these represent basics, rudimentary material an EE grad should have mastered...and can hardly be considered world class. Some of the remaining chapters: How to Design Analog circuits without a computer....My approach to feedback design...Jim Williams "zoo circuit", while having their merits....can all be found in the "EDN series for
design engineers". And to publish Pease's notes on Vbe.....Pulease, Pease.... "What's all this vbe stuff" can be found online for free.
In summary, this text will help augment an undergraduate EE's education. It might be useful for non-hardware or digital designer types who have to stray out of their comfort zones, into the analog domain. But there is little in this text that actually world class. Williams Zoo circuit is the the only world class design. Everything else is either rudimentary, or a rip off of other previous published material.
I downgraded the text to 3 stars because the text is somewhat deceptive as to what it purports to be. It should be more appropriately titled: "Analog Circuits: Basics To Be Mastered". The authors are competent, and well known in the field, so it wasn't downgraded any further.

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Newnes has worked with Robert Pease, a leader in the field of analog design to select the very best design-specific material that we have to offer. The Newnes portfolio has always been know for its practical no nonsense approach and our design content is in keeping with that tradition. This material has been chosen based on its timeliness and timelessness. Designers will find inspiration between these covers highlighting basic design concepts that can be adapted to today's hottest technology as well as design material specific to what is happening in the field today. As an added bonus the editor of this reference tells you why this is important material to have on hand at all times. A library must for any design engineers in these fields. *Hand-picked content selected by analog design legend Robert Pease*Proven best design practices for op amps, feedback loops, and all types of filters*Case histories and design examples get you off and running on your current project

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