Title :
A CMOS adaptive delta modulation CODEC chip for PABX applications
Author :
Gregorian, R. ; Wegner, G. ; Flanagin, S. ; Gord, J.
Author_Institution :
American Microsystems,Santa Clara, CA, USA
Abstract :
This paper will discuss a CMOS CODEC which is comprised of a continually variable adaptive delta modulator with switched-capacitor filters. The chip includes a DTMF generator and an 8-step programmable gain stage, and dissipates 80mW.
Keywords :
Capacitors; Clocks; Codecs; Counting circuits; Delta modulation; Detectors; Feedback; Low pass filters; Switching circuits; Voltage;
Conference_Titel :
Solid-State Circuits Conference. Digest of Technical Papers. 1983 IEEE International
Conference_Location :
New York, NY, USA
DOI :
10.1109/ISSCC.1983.1156447
