lm567ch

Manufacturer Part Numberlm567ch
DescriptionTone Decoder
ManufacturerNational Semiconductor Corporation
lm567ch datasheet
 


1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
Page 1/8

Download datasheet (287Kb)Embed
Next
LM567/LM567C
Tone Decoder
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 cir-
cuit consists of an I and Q detector driven by a voltage con-
trolled oscillator which determines the center frequency of
the decoder. External components are used to indepen-
dently set center frequency, bandwidth and output delay.
Features
n 20 to 1 frequency range with an external resistor
n Logic compatible output with 100 mA current sinking
capability
n Bandwidth adjustable from 0 to 14%
Connection Diagrams
Metal Can Package
Top View
Order Number LM567H or LM567CH
See NS Package Number H08C
© 1999 National Semiconductor Corporation
DS006975
n High rejection of out of band signals and noise
n Immunity to false signals
n Highly stable center frequency
n Center frequency adjustable from 0.01 Hz to 500 kHz
Applications
n Touch tone decoding
n Precision oscillator
n Frequency monitoring and control
n Wide band FSK demodulation
n Ultrasonic controls
n Carrier current remote controls
n Communications paging decoders
Dual-In-Line and Small Outline Packages
DS006975-1
Order Number LM567CM
See NS Package Number M08A
Order Number LM567CN
See NS Package Number N08E
May 1999
DS006975-2
Top View
www.national.com

lm567ch Summary of contents

  • Page 1

    ... Logic compatible output with 100 mA current sinking capability n Bandwidth adjustable from 0 to 14% Connection Diagrams Metal Can Package Top View Order Number LM567H or LM567CH See NS Package Number H08C © 1999 National Semiconductor Corporation DS006975 n High rejection of out of band signals and noise n Immunity to false signals n Highly stable center frequency n Center frequency adjustable from 0 ...

  • Page 2

    ... For the Small Outline package, the device must be derated based on a thermal resistance of 160˚C/W, junction to ambient. Note 3: Refer to RETS567X drawing for specifications of military LM567H version. www.national.com (Note 1) Operating Temperature Range LM567H LM567CH, LM567CM, LM567CN Soldering Information Dual-In-Line Package 9V Soldering (10 sec.) 1100 mW ...

  • Page 3

    Schematic Diagram Typical Performance Characteristics Typical Frequency Drift DS006975-10 Typical Bandwidth Variation DS006975-11 3 DS006975-3 Typical Frequency Drift DS006975-12 www.national.com ...

  • Page 4

    Typical Performance Characteristics Typical Frequency Drift DS006975-13 Detection Bandwidth as a Function of C and DS006975-16 Typical Output Voltage vs Temperature DS006975-19 www.national.com (Continued) Bandwidth vs Input Signal Amplitude DS006975-14 Typical Supply Current vs Supply Voltage DS006975-17 ...

  • Page 5

    Typical Applications Component values (typ) R1 6.8 to 15k R2 4.7k R3 20k C1 0.10 mfd C2 1.0 mfd 6V C3 2.2 mfd 6V C4 250 mfd 6V Touch-Tone Decoder DS006975-5 5 www.national.com ...

  • Page 6

    Typical Applications (Continued) Oscillator with Quadrature Output Connect Pin 3 to 2.8V to Invert Output AC Test Circuit = 100 kHz + 100 kHz. * Note: Adjust for f o www.national.com Oscillator with Double Frequency Output ...

  • Page 7

    ... Physical Dimensions inches (millimeters) unless otherwise noted Metal Can Package (H) Order Number LM567H or LM567CH NS Package Number H08C Small Outline Package (M) Order Number LM567CM NS Package Number M08A 7 www.national.com ...

  • Page 8

    ... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...