MT8870D Datasheet (Mitel) - Integrated DTMF Receiver

MT8870D, Integrated DTMF Receiver

The MT8870D/MT8870D-1 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions.

The filter section uses switched capacitor techniques for high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tonepairs into a

MT8870D Features

* Complete DTMF Receiver

* Low power consumption

* Internal gain setting amplifier

* Adjustable guard time

* Central office quality

* Power-down mode

* Inhibit mode

* Backward compatible with MT8870C/MT8870C-1 Applications

* Rec