LM567, LM567C
www.ti.com
SNOSBQ4D –MAY 1999–REVISED MARCH 2013
LM567/LM567C Tone Decoder
Check for Samples: LM567, LM567C
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FEATURES
APPLICATIONS
2
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20 to 1 Frequency Range with an External
Resistor
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Touch Tone Decoding
Precision Oscillator
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Logic Compatible Output with 100 mA Current
Sinking Capability
Frequency Monitoring and Control
Wide Band FSK Demodulation
Ultrasonic Controls
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Bandwidth Adjustable from 0 to 14%
High Rejection of Out of Band Signals and
Noise
Carrier Current Remote Controls
Communications Paging Decoders
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Immunity to False Signals
Highly Stable Center Frequency
DESCRIPTION
Center Frequency Adjustable from 0.01 Hz to
500 kHz
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.
CONNECTION DIAGRAM
Figure 1. Metal Can Package
Figure 2. PDIP and SOIC Packages
Top View
Top View
See Package Number LMC0008C
OBSOLETE
See Package Number D0008A
See Package Number P0008E
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated
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