DTMF Module

  • Rajkumar Sharma
  • 16074
    Views
  • medium
  • Tested

C039_1

 

DTMF Development Board offers a very convenient way to generate DTMF tones and demodulate it.  It uses the famous MT8880/MT8888 DTMF transreceiver IC.

  • Easy 10 pin Box Header connector for interfacing data/control pins
  • Crystal derived frequency source for accurate generation and demodulation of DTMF tones for your project
  • Onboard upto 350 mW audio amplifier block for DTMF tones with Volume Adjust Preset
  • 5V Supply sourced via interfacing Box Header
  • Header  type analog connection
  • Four mounting holes 3.2 mm each
  • PCB dimensions 56 mm x 49 mm

Schematic

SCHEMATIC

 

Parts List

BOM

Photos

C039

PCB

Downloads

Comments

  • robert

    useful

    4 years ago
  • Rajesh Vagadia - VU2EXP

    I will Try to use this project with my Ham Radio walki talkie.
    tnx VU2EXP

    3 years ago
  • KB4MDD

    Where can this be purchased?

    2 years ago
    • admin

      We don’t sell kits or ready products. Alternatively, you may find some kits of our projects here: http://www.koteq.com

      2 years ago

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