LM567CN Tone Decoder/Lock Detector IC with Programmable Frequency (0.01Hz-500kHz), High Noise Immunity 20mA Output Sink Wide Supply Range (4.75V-9V) DIP-8 Package

LM567CN Tone Decoder/Lock Detector IC with Programmable Frequency (0.01Hz-500kHz), High Noise Immunity 20mA Output Sink Wide Supply Range (4.75V-9V) DIP-8 Package

Features

 20 to 1 frequency range with an external resistor

 Logic compatible output with 100 mA current sinking capability

 Bandwidth adjustable from 0 to 14%

 High rejection of out of band signals and noise

 Immunity to false signals

 Highly stable center frequency

 Center frequency adjustable from 0.01 Hz to 500 kHz

Applications

 Touch tone decoding

 Precision oscillator

 Frequency monitoring and control

 Wide band FSK demodulation

 Ultrasonic controls

 Carrier current remote controls

 Communications paging decoders

General Description

The LM567andLM567Caregeneralpurpose tone decoders designed to provide a saturated transistor switch to ground when an input signal is present within the passband. The circuit consists of an I and Q detector driven by a voltage controlled oscillator which determines the center frequency of the decoder. External components are used to indepen dently set center frequency, bandwidth and output delay.

INFORMATION

Drawing

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