DocumentCode
899903
Title
A digital signal-processing codec filter for PCM applications
Author
Vogel, Dieter ; Reisinger, Jochen ; Schmid, Eberhard ; Lerach, Lothar
Volume
21
Issue
1
fYear
1986
fDate
2/1/1986 12:00:00 AM
Firstpage
175
Lastpage
181
Abstract
A programmable signal-processing codec filter (SICOFI) which performs its main filter functions by means of digital signal processing (DSP) is described. Besides PCM coding and band limitation, the circuit provides programmable adjustment of level control, impedance matching, hybrid balancing, and frequency response correction. Circuit performance, chip area, and power consumption have been optimized and a set of consistent CAD tools were developed for complete verification. Progress in circuit-design simulation techniques and an advanced CMOS technology allowed the economic integration of the analog and digital parts consisting of 36000 transistors on a 37.5-mm/SUP 2/ die.
Keywords
CMOS integrated circuits; Codecs; Computerised signal processing; Digital filters; Pulse-code modulation; codecs; computerised signal processing; digital filters; pulse-code modulation; CMOS technology; Circuits; Codecs; Digital filters; Digital signal processing chips; Frequency response; Impedance matching; Level control; Phase change materials; Signal processing;
fLanguage
English
Journal_Title
Solid-State Circuits, IEEE Journal of
Publisher
ieee
ISSN
0018-9200
Type
jour
DOI
10.1109/JSSC.1986.1052495
Filename
1052495
Link To Document