sigma-delta converter
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sigma-delta converter
[‚sig·mə ‚del·tə kən′vərd·ər] (electronics)
A class of electronic systems containing both analog and digital subsystems whose most common application is the conversion of analog signals to digital form, and vice versa, using pulse density modulation to create a high-rate stream of single-amplitude pulses in either case. Also known as delta-sigma converter.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
sigma-delta converter
A circuit that generates a 1-bit pulse density modulated (PDM) signal from analog input. It creates fixed-width pulses in relation to the amplitude of the analog waveform. As the wave amplitude rises, 1's are produced. As it falls, 0's result. If it remains neutral, alternating 01's are created. See PDM and SACD.Copyright © 1981-2025 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive
One of the advantages of a
sigma-delta converter, such as is used in the PXIe-4081, is the noise reduction it provides by bandwidth shaping.
In addition, semiconductor
sigma-delta converters tend to be low cost because of their digital nature.
CMOS
sigma-delta converters; practical design guide.
For frequency-domain applications,
sigma-delta converters have distinct advantages, as described by National Instruments' Andy Deck, product marketing group manager for conditioned measurements, "Several of our DAQ modules with integrated signal conditioning utilize sigma-delta ADCs.
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