This component is perfect for integrating dual-tone multi-frequency (DTMF) decoding into your project. The detection module interprets incoming tones and generates a coded output that can be connected to various microcontrollers.
DTMF is commonly used in touch-tone devices, such as telephones. Each tone consists of a combination of two sine waves, creating a unique signal that can be transmitted or heard. When the module receives this signal, it decodes it and produces a binary output for use in other devices. The module also features onboard LEDs to indicate the state of the signal.
The MT8870 Tone Decoder, developed by MITEL, is a widely used multi-frequency decode IC. It acts as a complete DTMF receiver, separating the incoming signal into high-frequency and low-frequency groups. The digital decoder then determines the key value and sends it out via four lines (Q1, Q2, Q3, Q4) in binary form.
Features
Internal Gain setting amplifier
Onboard LED, it is very convenient to check the output state.
Adjustable Guard time
Onboard 3.5mm input interface
5 Channel Interface
On-board MT8870 frequency decoder chip
Power-Down mode
Inhibit Mode
Onboard Audio input interface
Onboard LED lights for output state indication Complete DTMF Receiver. 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.
Uncategorized, Electronic Modules, Mechanical Parts & Workbench Tools, Workbench Tools
