A slope adaptive delta modulator for VLSI signal processing systems

Author

Giancarlo, Charles Henry ; Sodini, Charles G.

Volume

33

Issue

1

fYear

1986

fDate

1/1/1986 12:00:00 AM

Firstpage

51

Lastpage

58

Abstract

A novel method of analog-to-digital (A/D) conversion utilizing a Slope Adaptive Delta Modulation approach which we will call Instantly Adaptive Delta Modulation (IADM), is described. This new system provides higher quality processable code than present modulators yet requires substantially reduced sampling rates. It displays a wide tolerance for variations in its component values and operates undisturbed in the presence of large amplitude dc or 60-Hz interference signals. An analysis of the frequency response and quantization noise characteristics of the system are presented. Specific designs for the component blocks demonstrate the compatibility of the system with present day CMOS technology. The compatibility of this system with VLSI technology makes it especially attractive for implementation in a monolithic audio-processing IC, such as a CODEC filter, or audio quality A/D converter.

Keywords

A/D converters; ADC; Analog-to-digital conversion (ADC); Communication networks; Delta modulation; VLSI; Very large-scale integration (VLSI); Adaptive signal processing; CMOS technology; Delta modulation; Displays; Frequency response; Interference; Modulation coding; Quantization; Signal sampling; Very large scale integration;

fLanguage

English

Journal_Title

Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

0098-4094

Type

jour

DOI

10.1109/TCS.1986.1085833

Filename

1085833