Noise Shaping Sigma Delta DACs - ESS Technology, Inc.
Noise Shaping Sigma Delta DACs - ESS Technology, Inc.
Noise Shaping Sigma Delta DACs - ESS Technology, Inc.
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Modulators<br />
Omar Khayyam uses error<br />
minimizing algorithm in the<br />
Iranian Calendar: a 1 st order ΣΔ<br />
The Gregorian<br />
Calendar uses the<br />
SN7497 algorithm<br />
for leap years 1953<br />
c.1950<br />
c. 1975<br />
1972 1980's 2005+<br />
1079<br />
1582<br />
France: video encoder<br />
Bendix Digital Differential Analyzer<br />
TI Sync. Binary Rate Multiplier SN7497<br />
UK Post Office/Ferranti PCM1/PCM2<br />
and the Consumer Micro-Circuits FX209<br />
Crystal Semiconductor ΣΔ – many products<br />
Many other companies (ADI, TI, Wolfson etc.) start to make ΣΔ's<br />
<strong>ESS</strong> <strong>Technology</strong> HyperStream Modulators<br />
There may well be more: these are the ones that<br />
have come to my attention over the years.<br />
ΣΔ/HyperStream 23 of<br />
44
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