LM567 - Tone Decoder [Discontinued]

Datasheet	Knowledge Base

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

General Description

The LM567 and LM567C are general purpose tone decoders designed to provide a saturated transistor switch to ground when an input signal is present within the passband. More...

Applications

•	Touch tone decoding
•	Precision oscillator
•	Frequency monitoring and control
•	Wide band FSK demodulation
•	Ultrasonic controls
•	Carrier current remote controls
•	Communications paging decoders

Typical Application

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Typical Performance

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Also Recommended

LM567C

Replacement For Discontinued LM567

Connection Diagram

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Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LM567/LM567C Tone Decoder	340 Kbytes	14-Oct-04	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

General Description

The LM567 and LM567C are general purpose 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 independently set center frequency, bandwidth and output delay.

Application Notes

Title	Size in Kbytes	Date
AN-662: COP800 Based Automated Security/Monitoring System	137 Kbytes	5-Aug-95	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]