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EETimes - Op amps in small-signal audio design - Part 1 ...
https://www.eetimes.com/op-amps-in-small-signal-audio-design-part-1-op-amp-history-properties/#:~:text=Audio%20design%20has%20for%20many%20years%20relied%20on,input%20bias%20currents%20and%20low%20cost%20were%20important.
Audio Designs With Opamps
https://sound-au.com/dwopa.htm
The operational amplifier was first used in the 1930's as the basis of analogue computers, and much development took place to design accurate gun aiming systems during the Second World War. Since integrated circuits were unknown at the time (this was before the invention of the transistor), the earliest versions were made using valves.
Audio Op Amps | Reference Designs | Op Amps | …
https://www.ti.com/amplifier-circuit/op-amps/audio/reference-designs.html
Our audio op amps are featured in reference designs for these applications: automotive, communications equipment, enterprise systems, industrial, and personal electronics (PE). Home Amplifiers Amplifiers
EETimes - Op amps in small-signal audio design - Part 1 ...
https://www.eetimes.com/op-amps-in-small-signal-audio-design-part-1-op-amp-history-properties/
By Douglas Self 05.25.2011 0. Audio design has for many years relied on a very small number of op-amp types; the TL072 and the 5532 dominated the audio small-signal scene for many years. The TL072, with its JFET inputs, was used wherever its negligible input bias currents and low cost were important. For a long time the 5534/5532 was much more …
Audio Op Amp | Overview | Operational Amplifiers | TI.com
https://www.ti.com/amplifier-circuit/op-amps/audio/overview.html
Audio op amps for the most. discerning audio enthusiasts. Building on TI's Burr-Brown™ technology legacy to deliver a superior audio experience. Explore our portfolio of audio op amps and deliver a superior audio experience to your customers. Our Burr-Brown™ and SoundPlus™ legacy has led to the high-performance, ultra-low noise, low power and small-size audio op …
EETimes - Op amps in small-signal audio design - Part 3 ...
https://www.eetimes.com/op-amps-in-small-signal-audio-design-part-3-selecting-the-right-op-amp/
The OP275 Op-Amp The Analog Devices OP275 is one of the few op-amps specifically marketed as an audio device. Its most interesting characteristic is the Butler input stage, which combines bipolar and JFET devices. The idea is that the bipolars give accuracy and low noise, while the JFETs give speed and 'the sound quality of JFETs'.
Small Audio Power Amplifier Using Op-Amp and Two ...
https://www.deeptronic.com/electronic-circuit-design/small-audio-power-amplifier-using-op-amp-and-two-transistors/
The op-amp output is connected to the center of diode-resistor biasing circuitry, and this signal manipulate the biasing point. At idle condition, when there is no signal in the input, the output should be bet at Vcc/2.
Audio Amplifier Circuit
https://web.ece.ucsb.edu/Faculty/rodwell/Classes/ece2c/labs/Lab%201a%20-%202C%202007.pdf
speakers have a low impedance, typically 8-Ohm. Even for a low-power 0.5W audio amplifier, PIR 2 /2 requires that the amplifier must be able to source a peak AC current of around 350 mA with an 8-Ohm load. This is a lot more than a typical op-amp is designed to provide. For example, the LM358 and LF353 (two op-amps used in this lab) can source
Notes on Audio Op-Amps - Tangentsoft
https://tangentsoft.net/audio/opamps.html
We can eliminate power op-amps, super-high-speed op-amps, high-voltage op-amps, low-frequency op-amps, and low-spec general-purpose op-amps. Audio requires a fairly high slew rate to maintain low distortion, flat frequency response from 20 Hz to 20,000 Hz, and decent output current if the chip is to drive headphones directly.
Operational Amplifiers: Basics and Design Aspects
https://www.mcvts.net/cms/lib07/NJ01911694/Centricity/Domain/134/Op-Amp%20Basics.pdf
The circuitry that makes up an op-amp consists of transistors, resistors, diodes, and a couple capacitors. In general, these components are combined to achieve within the op-amp two stages of differential amplifiers and a common-collector amplifier. [1] In an effort to simplify the operational amplifier, one must not forget that the
Audio Power Amplifier - de Smith
https://www.desmith.net/NMdS/Data/Books%20and%20Manuals/Self%20-%20Audio%20Power%20Amp%20Design%20Handbook%204th%20Edn.pdf
Audio power amplifier design handbook. — 4th ed. 1. Audio amplifiers — Design 2. Power amplifiers — Design I. Title 621.3 81535 Library of Congress Control Number: 2006927666 ISBN-13: 978-0-7506-8072-1 ISBN-10: 0-7506-8072-5 For information on all Newnes publications visit our web site at www.newnespress.com Printed and bound in Great ...
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