MT8870

MT8870 DTMF Speech Decoding Module


  • Working voltage: 5V

  • Power Consumption: 500MW(MAX)r: 500 mw (MAX)

  • On-board voice input interface

  • On-board LED, it is very convenient to check the output state.

  • Onboard 5 x LED indicators for easy viewing output state

  • Operating Temperature : -40-+85 °C

  • IO Drive : Current Maximum 10mA.

  • PCB Size : 25.4x25.4MM

  • This decoding module is for mobile and fixed telephone voice dialing decoding function

  • Designed specifically for ARDUINO Board. Can also be used for other MCUs(AVR PIC MSP430 STM32 ARM7/9/10/11 FPGA/CPLD)

  • Low power consumption

  • Internal gain setting amplifier

  • Onboard 3.5mm input interface

  • 5 Channel interface

  • On-board MT8870 frequency decoder chip

  • Does not require external circuits or wiring, it can be inserted directly into the UNO/MEGA2560/DUE board to use.

  • 12-Digital outputs decode mobile and fixed telephone keys (0-9, * #). Also, another 4 Digital output(ABCD) can use “DTMF Dial” for Software control.


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