Title :
Fully integrated analog telephone
Author :
Moons, Elve D J ; Willocx, Eddie ; Rabaey, Dirk
Author_Institution :
Alcatel Bell Telephone, Antwerp, Belgium
fDate :
6/1/1989 12:00:00 AM
Abstract :
The maximum integrated phone (MIP) combines the signaling and speech functions for analog subset applications in a single integrated circuit using a 2.4-μm CMOS technology. The device can handle both dual-tone multiple-frequency and decadic dialing. A ten-number repertory and a last-number redial function are included. A loudspeaker amplifier allows call progress monitoring during on-hook dialing. Background-noise-reduction circuitry is included in the transmit path to achieve a noise performance of -72 dBVp with 50-dB gain. Power is extracted from the line terminals by a synthesized high-impedance current source. The chip is 17-mm2 and is presented in a 40-pin dual in-line package
Keywords :
CMOS integrated circuits; linear integrated circuits; telephone sets; 2.4 micron; 40 pin DIP; CMOS technology; background noise reduction; call progress monitoring; decadic dialing; dual in-line package; dual-tone multiple-frequency; electronic telephone set; integrated analog telephone; integrated circuit; last-number redial function; loudspeaker amplifier; maximum integrated phone; monolithic IC; on-hook dialing; speech functions; synthesized high-impedance current source; ten-number repertory; Analog integrated circuits; Application specific integrated circuits; CMOS analog integrated circuits; CMOS integrated circuits; CMOS technology; Integrated circuit technology; Loudspeakers; Monitoring; Speech; Telephony;
Journal_Title :
Solid-State Circuits, IEEE Journal of
