Fully integrated analog telephone

Author

Moons, Elve D J ; Willocx, Eddie ; Rabaey, Dirk

Author_Institution

Alcatel Bell Telephone, Antwerp, Belgium

Volume

24

Issue

3

fYear

1989

fDate

6/1/1989 12:00:00 AM

Firstpage

681

Lastpage

685

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 dBV_p 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;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.32025

Filename

32025