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In Reply to: RE: Precision resistors posted by knewton on November 12, 2016 at 08:06:31
This is also what I admired about the Philips TDA1541A, and whose execution in designs like the AMR CD77 is so noteworthy.
Do you know if such implementations were required/possible/executed with Burr Brown's DACs, by any chance?
DEM described.
Big J
"... only a very few individuals understand as yet that personal salvation is a contradiction in terms."
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Not the older Burr-Brown full resolution DACs, such the PCM63 or PCM1702/1704. However, the newer Burr-Brown/T.I. sigma-delta based PCM179x series DACs utilize a type of DEM called data-weighted-averaging (DWA) to convert the quantizer element inaccuracy (which otherwise produce distortion) in to random noise. See the below youtube video for an explanantion on the differences.
https://www.youtube.com/watch?v=BYLo2zRJ7FU&sns=em
_
Ken Newton
Big J
"... only a very few individuals understand as yet that personal salvation is a contradiction in terms."
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