Noise Shaping Sigma Delta DACs - ESS Technology, Inc.

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Source of None-PPS <strong>Noise</strong> • A clue can be seen in the <strong>Noise</strong>-vs-DC offset graph of a ΣΔ modulator: (This is one of our competitors ΣΔ parts) ΣΔ/HyperStream 32 of 44
This makes the noise vary The noise here is -112db The noise here is -102db As the audio signal moves, the noise does not remain the same ΣΔ/HyperStream 33 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 and 14: How do we know which is best? These
Page 15 and 16: We look in the Frequency Domain Noi
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: What is None PSS Noise? • Periodi
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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