MT8870 DTMF Decoder Module
MT8870 DTMF Decoder Module is a very tiny module that is based on MT8870 DTMF decoder ic. The module offers a 3.5mm audio connector to connect an audio source. The DTMF signal in the audio source is decoded and the digital outputs on the module, indicate the key pressed. You may connect a phone to the module and the module will output the key(0-9, *, #, A, B, C, or D)pressed on the audio source. This module is suitable for modem interfaces, mobile radios, and other DTMF-related applications. Can be used to build mobile controlled robots, home automation projects, IVR style applications, etc
This component is ideally suited to adding dual-tone multi-frequency (DTMF) decoding to your project. This detection module interprets the incoming tone and produces a coded output that can be connected to all manner of microcontrollers.
The MT8870 Tone Decoder is a kind of commonly used multi-frequency decode IC product developed by the MITEL company. It is a complete DTMF receiver. After it received the DTMF signal, it will divide the signal into high-frequency group and low-frequency group and send the signal to the digital decoder which can figure out the key-value then send it to the outside Bus via four lines( Q1, Q2, Q3, Q4) as the binary form.
- Main Chip: MT8870DS
- Working voltage: 5VDC
- Power Consumption: 500mW (MAX)
- Type: MT 8870 DTMF Tone Decoding Module
- Operating Temperature: -40 ~ +85°C
- Onboard voice input interface
- Low power consumption
- Internal gain setting amplifier
- Onboard LED, it is very convenient to check the output state.
- Adjustable guard time
- Central office quality
- 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.
- Board Colour: Blue
- Dimension in: mm
- Length: 27mm
- Width: 25mm
- Height: 10mm
- Weight: 5gm
- 1 x MT8870 DTMF Decoder Module
Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
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