National P/N LM567 - Tone Decoder [Discontinued]

LM567

Tone Decoder [Discontinued]

Generic P/N 567

General Description
Features
Applications
Datasheet
Obsolete Parts
Application Notes

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.

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

Datasheet

Title	Size (in Kbytes)	Date	View Online	Download	Receive via Email
LM567/LM567C Tone Decoder	296 Kbytes	24-Jun-99	View Online	Download	Receive via Email

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Obsolete Parts

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM567G DWF	NONE	NONE	01/15/96
LM567H	LM567N/M	NATIONAL	01/15/96
LM567H/883	LM567N/M	NATIONAL	01/15/96

Application Notes

Title	Size (in Kbytes)	Date	View Online	Download	Receive via Email
AN-662: COP800 Based Automated Security/Monitoring System	137 Kbytes	5-Aug-95	View Online	Download	Receive via Email