Title :
A single-supply CMOS V.22bis modem analog processor
Author :
Daubert, S.J. ; Green, D.W. ; Khoury, J.M. ; Trosino, J.M. ; Zimany, E.J. ; Barner, J.R. ; Plany, J. ; Tompsett, M.F.
Author_Institution :
AT&T Bell Lab., Murray Hill, NJ, USA
Abstract :
A description is given of a mixed analog/digital chip that forms the core of a low-speed modem for use over standard telephone lines. It meets CCITT and AT&T requirements for data transmission at 1200 and 2400 b/s and the AT&T requirements for 300-b/s operation. The chip is implemented in a 1.75-μm analog CMOS process and occupies 32.4 mm 2. The device is powered by a single ±5-V supply and consumes less than 115 mW. The architecture and circuit implementation are described, and experimental results are given
Keywords :
CMOS integrated circuits; data communication equipment; modems; 1200 bit/s; 2400 bit/s; 300 bit/s; V.22bis modem; analog CMOS process; analog processor; architecture; circuit implementation; data transmission; low-speed modem; mixed analog/digital chip; standard telephone lines; Band pass filters; CMOS process; Circuits; Data communication; Differential quadrature phase shift keying; Dynamic range; Equalizers; Modems; Quadrature amplitude modulation; Telephony;
Conference_Titel :
Custom Integrated Circuits Conference, 1988., Proceedings of the IEEE 1988
Conference_Location :
Rochester, NY
DOI :
10.1109/CICC.1988.20940
