Noise Shaping Sigma Delta DACs - ESS Technology, Inc.

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Victorian Analysis machines The graph above is the height of the tides at a certain Indian port in the British Empire in 1900 Kelvin's (Thomson's) machine breaks the signal down into components: mostly just under two cycles per day as we see This is “Fourier Analysis” ΣΔ/HyperStream 14 of 44
We look in the Frequency Domain <strong>Noise</strong> Shaped DAC Ideal To find which is best, we need to look in the frequency domain. Here are those results from the noise shaped DAC slide after transformation into the frequency domain. Look how effective those little “dithers” are on the otherwise fixed levels: the region of 1kHz has improved by about 20dB (factor of 10) ΣΔ/HyperStream 15 of 44
Page 1 and 2: Noise Shaping Sigma Delta DACs Octo
Page 3 and 4: Corporate Overview • ESS was foun
Page 5 and 6: ESS Locations ΣΔ/HyperStream 5 of
Page 7 and 8: What is the price of Gas? (1) • A
Page 9 and 10: What is the price of Gas? (3) 1 Mon
Page 11 and 12: Does Noise Shaping help Audio? •
Page 13: How do we know which is best? These
Page 17 and 18: Overview of this Presentation • A
Page 19 and 20: This is a valuable technology.... T
Page 23 and 24: Modulators Omar Khayyam uses error
Page 25 and 26: The “order” of a control system
Page 29 and 30: ESS HyperStream Modulator • The H
Page 31 and 32: What is None PSS Noise? • Periodi
Page 33 and 34: This makes the noise vary The noise
Page 35 and 36: Source of None-PPS Noise (3) • An
Page 37 and 38: Noise vs DC input ΣΔ HyperStream
Page 39 and 40: Non-linear Excess Phase • None-PS
Page 41 and 42: What is Non-linear Excess Phase?
Page 43 and 44: The Sabre DAC • But, engineering

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