MT8888CN Datasheet PDF - Zarlink

Description

●The MT8888C is a monolithic DTMF transceiver with call progress filter. It is fabricated in CMOS technology offering low power consumption and high reliability.

●The receiver section is based upon the industry standard MT8870 DTMF receiver while the transmitter utilizes a switched capacitor D/A converter for low distortion, high accuracy DTMF signalling. Internal counters provide a burst mode such that tone bursts can be transmitted with precise timing. A call progress filter can be selected allowing a microprocessor to analyze call progress tones.

●Features

●• Central office quality DTMF transmitter/receiver

●• Low power consumption

●• High speed Intel micro interface

●• Adjustable guard time

●• Automatic tone burst mode

●• Call progress tone detection to -30 dBm

●Applications

●• Credit card systems

●• Paging systems

●• Repeater systems/mobile radio

●• Interconnect dialers

●• Personal computers