MT8870 Description
The MT8870D/MT8870D-1 is a plete 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 4-bit code.
MT8870 Key Features
- plete DTMF Receiver Low power consumption Internal gain setting amplifier Adjustable guard time Central office quality P