Description of DTMF Signal Encoder (91214/91215)
Quick Overview
The DTMF (Dual-Tone Multi-Frequency) Signal Encoder is a specialized module used for generating DTMF tones, commonly found in telecommunication applications. Models 91214 and 91215 are engineered to encode 16 different tone pairs, usually used for numeric or functional inputs in telephone systems, remote control operations, and similar applications.
How It Works
The encoder takes digital inputs, usually a 4-bit binary number, and converts it into corresponding DTMF tones. These tones are then transmitted over audio channels or used in control systems. The encoder integrates an oscillator and a mixer for generating accurate and reliable DTMF tones.
Technical Specification
- Operating Voltage: 3.3V to 5V
- Encoding: 16 distinct DTMF tone pairs
- Output: Analog DTMF signals
- Input: 4-bit binary or direct keypad input
- Operating Temperature: -20°C to 70°C
Key Features
- Generates 16 distinct DTMF tones
- Highly accurate and stable oscillator
- Simple interface for ease of integration
- Low power consumption
- Wide operating temperature range
Application
- Telecommunications Systems
- Interactive Voice Response Systems
- Home Automation
- Security Systems
- Remote Control Applications
Summary
The DTMF Signal Encoder (91214/91215) converts numeric and control inputs into dual-tone multi-frequency (DTMF) audio signals. These encoded tones facilitate remote control, data transmission, and automation in applications like telecommunication and remote control systems. The device simplifies the process of sending commands or data via audio signals, enabling versatile communication and control solutions.
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