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LMC567 Datasheet Preview

LMC567 Datasheet

Low-Power Tone Decoder

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LMC567
SNOSBY1C – JUNE 1999 – REVISED DECEMBER 2015
LMC567 Low-Power Tone Decoder
1 Features
1 Functionally Similar to LM567
• 2-V to 9-V Supply Voltage Range
• Low Supply Current Drain
• No Increase in Current With Output Activated
• Operates to 500-kHz Input Frequency
• High Oscillator Stability
• Ground-Referenced Input
• Hysteresis Added to Amplitude Comparator
• Out-of-Band Signals and Noise Rejected
• 20-mA Output Current Capability
2 Applications
• Touch-Tone Decoding
• Precision Oscillators
• Frequency Monitoring and Control
• Wide-Band FSK Demodulation
• Ultrasonic Controls
• Carrier Current Remote Controls
• Communications Paging Decoders
3 Description
The LMC567 device is a low-power, general-purpose
LMCMOS tone decoder which is functionally similar
to the industry standard LM567. The device consists
of a twice frequency voltage-controlled oscillator
(VCO) and quadrature dividers which establish the
reference signals for phase and amplitude detectors.
The phase detector and VCO form a phase-locked
loop (PLL) which locks to an input signal frequency
which is within the control range of the VCO. When
the PLL is locked and the input signal amplitude
exceeds an internally pre-set threshold, a switch to
ground is activated on the output pin. External
components set up the oscillator to run at twice the
input frequency and determine the phase and
amplitude filter time constants.
Device Information (1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMC567
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Diagram
1
Amplitude
Detector
2
3
Phase
Detector
4
8
7
÷2 ÷2
6
VCO
5
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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LMC567 Datasheet Preview

LMC567 Datasheet

Low-Power Tone Decoder

No Preview Available !

LMC567
SNOSBY1C – JUNE 1999 – REVISED DECEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 Recommended Operating Conditions....................... 4
7.3 Thermal Information .................................................. 4
7.4 Electrical Characteristics........................................... 4
7.5 Typical Characteristics .............................................. 6
8 Parameter Measurement Information .................. 7
8.1 Test Circuit ................................................................ 7
9 Detailed Description .............................................. 8
9.1 Overview ................................................................... 8
9.2 Functional Block Diagram ......................................... 8
9.3 Feature Description................................................... 8
9.4 Device Functional Modes.......................................... 9
10 Application and Implementation........................ 10
10.1 Application Information.......................................... 10
10.2 Typical Application ............................................... 10
11 Power Supply Recommendations ..................... 12
12 Layout................................................................... 12
12.1 Layout Guidelines ................................................. 12
12.2 Layout Example ................................................... 12
13 Device and Documentation Support ................. 13
13.1 Device Support .................................................... 13
13.2 Community Resources.......................................... 13
13.3 Trademarks ........................................................... 13
13.4 Electrostatic Discharge Caution ............................ 13
13.5 Glossary ................................................................ 13
14 Mechanical, Packaging, and Orderable
Information ........................................................... 13
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (April 2013) to Revision C
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes section, Application and
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation
Support section, and Mechanical, Packaging, and Orderable Information section................................................................ 1
Changes from Revision A (April 2013) to Revision B
Page
• Changed layout of National Data Sheet to TI format ............................................................................................................. 9
2
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Product Folder Links: LMC567
Copyright © 1999–2015, Texas Instruments Incorporated


Part Number LMC567
Description Low-Power Tone Decoder
Maker etcTI
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