MT88L70 Datasheet (Zarlink Semiconductor) - 3 Volt Integrated DTMF Receiver

MT88L70, 3 Volt Integrated DTMF Receiver

Applications * * * * * * Paging systems Repeater systems/mobile radio Credit card systems Remote control Personal computers Telephone answering machine VDD VSS PWDN Bias Circuit Chip Chip Power Bias IN + IN GS w w .D w Dial Tone Filter t a S

MT88L70 Features

* 2.7 - 3.6 volt operation Complete DTMF receiver Low power consumption Internal gain setting ampliﬁer Adjustable guard time Central ofﬁce quality Power-down mode Inhibit mode Functionally compatible with Zarlink