The LM567 is a general-purpose tone decoder integrated circuit designed to detect specific audio frequencies within a certain range. Here's a breakdown of its key features:
Function: Detects and decodes specific tones or frequencies present in an input audio signal.
Applications: Commonly used in various applications requiring tone detection, such as:
Remote control systems (decoding tones from remote controls)
Touch-tone dialing systems (detecting tones from a telephone keypad)
Security systems (detecting specific alarm tones)
DTMF decoders (decoding dual-tone multi-frequency tones)
Technical Specifications: (May vary slightly depending on the manufacturer)
Input Frequency Range: Typically 200 Hz to 3 kHz
Output: Provides a logic-level signal when a matching tone is detected.
Adjustable Center Frequency: Allows you to set the specific frequency the decoder listens for.
Adjustable Bandwidth: Controls how closely the input signal needs to match the center frequency for detection.
Benefits:
Simple to use: Requires minimal external components for basic operation.
Versatile: Can be used to detect various tones within its frequency range.
Low power consumption.