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LM567CM Tone Decoder


source: | post time:2010-02-26

Part Number(s)
(NSID)
Top View Type Pins MSL Rating Peak Reflow RoHS
Status
CAD Symbols Models Package
Marking
Format
LM567CM/NOPB
LM567CM
SOIC NARROW 8 1
1
260
235
Detail N/A N/A
NSZXTT
LM
567CM
LM567CMX/NOPB
LM567CMX
SOIC NARROW 8 1
1
260
235
Detail N/A N/A
NSZXTT
LM
567CM
LM567CN/NOPB
LM567CN
MDIP 8 1
1
NA
NA
Detail N/A N/A
NSUZXYTTE#
LM
567CN

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.

Applications

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

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

Diagrams

Typical Application
click for larger image


 

 

 

Connection Diagram
click for larger image


 


Typical Performance
click for larger image


source:ShenZhen henlito electronic co.,ltd.


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