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- Burr brown op amp offset measurement pdf#
- Burr brown op amp offset measurement full#
- Burr brown op amp offset measurement series#
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This rules out single devices, surface mount packages, and lower voltage op amps. It also requires op amps that can operate comfortably at +/- 12 volts (24 volts total). LIMITED SCOPE: The O2 headphone amp uses DIY-friendly DIP8 dual op amps.
Burr brown op amp offset measurement series#
I’ve also referenced the work of Douglas Self who has run many op amps through an Audio Precision SYS-2700 series audio analyzer in various configurations.
Burr brown op amp offset measurement pdf#
It’s a 436 page monumental effort in the form of a huge 35 MB PDF (which is why I’m not linking to it here).
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For an example of a more ambitious effort, look up Samuel Groner’s “Operational Amplifier Distortion” published in 2009.
Burr brown op amp offset measurement full#
A complete op amp survey is at least several full weeks worth of work. So please don’t expect a technical paper worthy of the Audio Engineering Society. It’s mostly a side story to my research and development of the O2 Headphone Amp. REALITY CHECK: This isn’t a comprehensive comparison. This article is all about measuring the results and putting some facts around the differences between op amps in a typical audio application. But when someone “upgrades” to an expensive op amp with high expectations many assume the different sound must be better sound. Some of the differences heard could be high frequency instability. Worse, these usually faster parts can easily be unstable in a circuit designed for a much slower part. A lot of op amps get “upgraded” to much more expensive parts usually with zero real world benefit. THIS STUFF MATTERS: A lot of people play around with “op amp rolling” but they mostly lack the ability to measure the results. This is the follow up with more technical information, a summary of many popular op amps, and some of the measurements I made. INTRO: In last week’s Op Amps: Myths & Facts article I covered the background for op amps, why they’re important, and some common audiophile op amp myths.