DocumentCode :
1671281
Title :
Area comparisons of CMOS voiceband coders in scaled technologies
Author :
Leung, Bosco H.
Author_Institution :
Dept. of Electr. Eng., Waterloo Univ., Ont., Canada
fYear :
1989
Firstpage :
1804
Abstract :
The author explores alternatives for implementing the analog-to-digital interface with an antialias filter in voiceband telephony application. Since the resolution of the interface is fixed by transmission standards, the goal is to achieve the minimum cost, or area in integrated circuit technology. The chip area implemented in CMOS technology for three distinct approaches is compared: the conventional analog method, the per-channel oversampled method and the multichannel oversampled method. It is found that among the three implementations the per-channel area taken by the multichannel oversampled approach decreases at the fastest rate as technology scales and will take less area than the conventional approach at a minimum feature size of 1.5 μm and below
Keywords :
CMOS integrated circuits; codecs; telephone equipment; voice communication; 1.5 micron; CMOS voiceband coders; analogue/digital interface; antialias filter; codec; conventional analog method; integrated circuit technology; minimum chip area comparisons; minimum cost; minimum feature size; multichannel oversampled method; per-channel oversampled method; scaled technologies; voiceband telephony; Analog-digital conversion; CMOS technology; Circuits; Codecs; Costs; Crosstalk; Digital filters; Low pass filters; Telephony; Very large scale integration;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
Type :
conf
DOI :
10.1109/ISCAS.1989.100717
Filename :
100717
Link To Document :
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