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A 1.5 V, 4.1 mW dual channel audio delta-sigma D/A …
https://ieeexplore.ieee.org/document/672375/
A 1.5 V, 4.1 mW dual channel audio delta-sigma D/A converter. Abstract: This stereo /spl Delta//spl Sigma/ DAC for portable digital-audio consumes 4.1 mW at 1.5 V supply. The DAC has 90 dB dynamic range over a 20 Hz-20 kHz passband. The 5.3 mm/sup 2/ chip in 0.6 /spl mu/m CMOS includes low-threshold devices.
A 1.5 V, 4.1 mW dual-channel audio delta-sigma D/A ...
https://ieeexplore.ieee.org/document/735525/
The paper describes a stereo digital-to-analog converter intended for portable digital-audio which operates at 1.5 V and consumes only 4.1 mW. A 15-level quantization, third-order delta-sigma was employed to reduce digital operation speed, relax out-of-band filtering requirements, and enhance immunity to clock jitter. The use of direct charge transfer switched-capacitor …
Low-consumption sigma-delta DAC for audio mobile …
https://core.ac.uk/download/pdf/52805015.pdf
1 R. Schreier and G.C. Temes, Understanding Delta-Sigma Data Converters. New Jersey: Wiley, 2005 2 I.Fujimori, T.Sugimoto, "A 1.5V 4.1 mW dual-channel audio delta-sigma D/A converter", IEEE Solid State Circuits, SC-33, 1863-1870, December 1998 3 M.Annovazzi, V.Colonna, G.Gandolfi, F.Stefani, "A Low-Power 98-dB Multibit Audio DAC in
One-bit Delta Sigma Audio Encoding (DSD)
https://www.loc.gov/preservation/digital/formats/fdd/fdd000230.shtml
For audio, a delta-sigma converter digitizes the signal 1-bit deep with a very high sampling rate: 64 times the CD Audio sampling rate of 44.1 kHz, for a rate of 2.8224 MHz (1 bit times 64 times 44.1 kHz; rounded value 2.8 MHz). Advocates for this encoding state that the oversampling and subsequent digital processing reduces aliasing and other ...
LECTURE 40 OVERSAMPLING ADCS PART II
https://aicdesign.org/wp-content/uploads/2018/08/lecture40-150717.pdf
1.5V, 1mW, 98db Analog-Digital Converter† where a 1 = 1/3, a 2 = 3/25, a 3 = 1/10, a 4 = 1/10, b 1 = 6/5, b 2 = 1 and = 1/6 Advantages: • The modulator combines the advantages of both DFB and DFF type modulators: Only four op amps are required. The 1st integrator’s output swing is between ±V REF for large input signal amplitudes (0.6V REF
Sigma Delta Converter - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/engineering/sigma-delta-converter
4.3.6 Sigma-Delta Converter. A fairly new commercial converter is the sigma-delta ADC (sometimes referred to as a delta-sigma converter). This device is a low-cost, high-resolution ADC, suitable for low conversion rates. Sigma-delta ADCs typically have 16 to 24-bit resolution, with a usable input signal frequency range of a few Hz to a few kHz.
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