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

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

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 programmabl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Becker, R., De Mey, E., Haag, S., Vogeli, U., Wang, Z., Mulder, J., v.d. Sande, P., Sijbers, P.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
CMOS analog integrated circuits
Microcontrollers
Microphones
Power generation
Power supplies
Signal generators
Telecommunication control
Telephone sets
Telephony
Wires
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Beschreibung
Zusammenfassung: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.