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Description: 1. The MT8870 DTMF Voice Decoding Module is a versatile component designed for decoding Dual-Tone Multi-Frequency (DTMF) signals in various IoT applications. 2. It features a high sensitivity and accuracy, capable of decoding DTMF signals with an SNR as low as 14dB, making it suitable for noisy environments. 3. This module supports both standard and enhanced DTMF signaling formats and can be configured to support both RTS/CTS handshaking and XON/XOFF flow control for reliable data transmission. 4. The MT8870 comes with an integrated low-pass filter that eliminates noise and improves the overall signal quality, ensuring reliable decoding even in challenging conditions. 5. It features a compact size (12mm x 12mm) and low power consumption, making it ideal for use in battery-operated IoT devices where size and power efficiency are critical factors. 6. The module includes an I2C interface that allows easy integration with microcontrollers and other IoT components, simplifying system desig
| Specification | Details |
|---|---|
| Module Type | DTMF Voice Decoding Module |
| Chipset | MT8870 |
| Frequency Range | 50-4000 Hz |
| Input Voltage | 3.3V to 5V |
| Operating Temperature | -20°C to 85°C |
| Power Consumption | ≤10mA @ 3.3V |
| DTMF Tone Detection | Supports 16 DTMF tones (0-9 #) |
| Decode Speed | Up to 100 ms per tone |
| Data Output Format | TTL/CMOS |
| Interface | 2-wire or 3-wire |
| Package Type | SOP-28 |
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