DocumentCode :
2882322
Title :
A CMOS processor for a hands-free telephone
Author :
Dermardiros, E. ; Sich, Edward ; Kasbia, P.
Author_Institution :
Bell Northern Research, Ottawa, Canada
Volume :
XXVIII
fYear :
1985
fDate :
13-15 Feb. 1985
Firstpage :
184
Lastpage :
185
Abstract :
The design of a CMOS IC which employs a 5b logarithmic ADC and 46db programmable gain amplifiers for half duplex speaker microphone signal control will be described. The devices reject 50/60Hz power tones and drives a 50-ohm loudspeaker directly.
Keywords :
Band pass filters; CMOS process; Capacitors; Counting circuits; Electronics packaging; Microprocessors; Signal processing; Speech; Switches; Telephony;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference. Digest of Technical Papers. 1985 IEEE International
Conference_Location :
New York, NY, USA
Type :
conf
DOI :
10.1109/ISSCC.1985.1156803
Filename :
1156803
Link To Document :
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