``PACT´´ - A Programmable Analog CMOS Transmission Circuit for Electronic Telephone Sets

Author

Becker, R. ; De Mey, E. ; Haag, S. ; Vögeli, U. ; Wang, Z. ; Mulder, J. ; Sande, P.v.d. ; Sijbers, P.

Author_Institution

Philips Semicond., Faselec AG, Zurich, Switzerland

fYear

1993

fDate

13-16 Sept. 1993

Firstpage

957

Lastpage

960

Abstract

A CMOS circuit is presented which performs all analog interface functions to a standard telephone subscriber line including DC and AC termination, send and receive amplification, anti-side-tone network, line loss compensation, and dialing control. All transmission parameters are software programmable and are loaded into the IC during hook-off or, if necessary, during conversation. It is fabricated in a standard CMOS process for digital circuits and may be combined with a microcontroller core for a one chip telephone.

Keywords

CMOS analogue integrated circuits; subscriber loops; telephone sets; AC termination; DC termination; PACT; analog interface function; antiside-tone network; dialing control; electronic telephone sets; line loss compensation; programmable analog CMOS transmission circuit; telephone subscriber line; CMOS analog integrated circuits; Microcontrollers; Microphones; Power generation; Power supplies; Signal generators; Telecommunication control; Telephone sets; Telephony; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Device Research Conference, 1993. ESSDERC '93. 23rd European

Conference_Location

Grenoble

Print_ISBN

2863321358

Type

conf

Filename

5435641