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Convention Paper

A 112-dB SNR Oversampling DAC with Segmented Noise-Shaped Scrambling

Authors: Adams, Robert; Nguyen: , Khiem; Sweetland, Karl

AES Convention 105 · Paper 4774 · September 1998

Abstract

Conventional sigma-delta digital-analog converters (DACs) have performance limitations due to the use of switched-capacitor filters. In this design, a continuous-time output stage is used to achieve 112-dB signal-to-noise ratio (SNR) in a small chip area. The problems of jitter sensitivity and rise/fall matching are avoided by using a 6-bit modulator with a segmented scrambling circuit, along with a dual return-to-zero circuit.

Details

Published in
AES Convention 105
AES Convention
105
Paper number
4774
Publication date
September 6, 1998
Session subject
Conversion Technology
Affiliation
Analog Devices Inc., Wilmington, MA (See document for exact affiliation information.)
Type
Convention Paper