U4090B - Monolithic Integrated Feature Phone Circuit

TEMIC Semiconductors

Datasheet Details

Part number	U4090B
Manufacturer	TEMIC Semiconductors
File Size	677.24 KB
Description	Monolithic Integrated Feature Phone Circuit
Datasheet	U4090B_TEMICSemiconductors.pdf

The µc controlled telephone circuit U4090B is a linear integrated circuit for use in feature phones, answering machines and fax machines.

D D D D D D D D D D D D D D D DC characteristic adjustable Transmit and receive gain adjustable Symmetrical input of microphone amplifier Anti-clipping in transmit direction Automatic line loss compensation Symmetrical output of earpiece amplifier Built-in ear protection DTMF and MUTE input Adjustable sidetone suppression independent of sending and receiving amplification Speech circuit with two sidetone networks Built-in line detection circuit Integrated amplifier for loudhearing operation Anti.

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Published: Apr 16, 2005 |