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

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Features

andnbsp;20 to 1 frequency range with an external resistor

andnbsp;Logic compatible output with 100 mA current sinking capability

andnbsp;Bandwidth adjustable from 0 to 14%

andnbsp;High rejection of out of band signals and noise

andnbsp;Immunity to false signals

andnbsp;Highly stable center frequency

andnbsp;Center frequency adjustable from 0.01 Hz to 500 kHz

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Applications

andnbsp;Touch tone decoding

andnbsp;Precision oscillator

andnbsp;Frequency monitoring and control

andnbsp;Wide band FSK demodulation

andnbsp;Ultrasonic controls

andnbsp;Carrier current remote controls

andnbsp;Communications paging decoders

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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.

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INFORMATION

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Drawing

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