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Description: 1. Overview: The DTMF Decoder - GL is an Internet of Things (IoT) component designed to decode and interpret Dual Tone Multi-Frequency (DTMF) signals for machine applications. 2. Features: It supports wideband DTMF decoding with excellent accuracy, making it suitable for various telephony applications. The decoder operates over a standard RS-232 interface for easy integration with other systems. 3. Applications: Common uses include telephone system control, VoIP gateways, and automated call distribution systems. It can be integrated into home automation projects, security systems, and other IoT applications that require DTMF signal decoding. 4. Ease of Use: The DTMF Decoder - GL provides clear output in the form of ASCII codes, making it easy for software developers to implement the decoded data into their applications. It is suitable for both technical professionals and informed hobbyists. 5. Versatility: The device can decode both standard and extended DTMF signals, providing a
| Specification | Details |
|---|---|
| Input Type | Dual Tone Multi-Frequency (DTMF) |
| Frequency Response | 300 Hz to 4000 Hz |
| Sensitivity | Adjustable (-30 dB to +20 dB) |
| Noise Rejection Ratio | 40 dB (typical) 35 dB (min.) |
| Operating Voltage | 3.3 VDC 5 VDC (with voltage regulator) |
| Power Consumption | 10 mA (max.) at 3.3 VDC |
| Supply Current | 15 mA (typical) 25 mA (max.) |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +70°C |
| Dimensions | 19 mm x 27 mm x 10 mm (LxWxH) |
| Weight | 5 grams |
| Interface | TTL Level active high |
| Output Format | Debounced DTMF tones |
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