MT8870 IC – DTMF Decoder IC
The MT8870 is a device that can receive and decode DTMF signals. It has two parts: a filter section and a decoder section. The filter section uses a method called switched capacitor to separate the high and low frequency groups of the DTMF tones. The decoder section uses a method called digital counting to identify and convert all 16 DTMF combinations into a 4-bit code.
Features
- Â Complete DTMF Receiver
- Â Low power consumption
- Â Internal gain setting amplifier
- Â Adjustable guard time
- Â Central office quality
- Â Power-down mode
- Â Inhibit mode
- Â Backward compatible with MT8870C/MT8870C-1
Specification
Symbol | Parameter | Min | Max | Units |
VDD | DC Power Supply Voltage | 7 | V | |
VI | Voltage on any pin | VSS-0.3 | VDD+0.3 | V |
II | Current at any pin (other than supply) | 10 | m A | |
TSTG | Storage temperature | -65 | 150 | °C |
PD | Package power dissipation | 500 | Â m W |
Package Includes
1 x MT8870 IC – DTMF Decoder IC
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