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
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