LM565/LM565C
Phase Locked Loop
General Description
The LM565and LM565C are general purpose phase locked loops containing a stable,highly linear voltage controlled os-cillator for low distortion FM demodulation,and a double bal-anced phase detector with good carrier suppression.The VCO frequency is set with an external resistor and capacitor,and a tuning range of 10:1can be obtained with the same capacitor.The characteristics of the closed loop system —bandwidth,response speed,capture and pull in range —may be adjusted over a wide range with an external resistor and capacitor.The loop may be broken between the VCO and the phase detector for insertion of a digital fre-quency divider to obtain frequency multiplication.
The LM565H is specified for operation over the −55˚C to +125˚C military temperature range.The LM565CN is speci-fied for operation over the 0˚C to +70˚C temperature range.监狱风云歌曲
Features
n 200ppm/˚C frequency stability of the VCO
n Power supply range of ±5to ±12volts with 100ppm/%typical
n 0.2%linearity of demodulated output
n Linear triangle wave with in phase zero crossings available
n TTL and DTL compatible phase detector input and square wave output
n Adjustable hold in range from ±1%to >±60%
Applications
n Data and tape synchronization n Modems
n FSK demodulation n FM demodulation
n Frequency synthesizer n Tone decoding
n Frequency multiplication and division n SCA demodulators n Telemetry receivers n Signal regeneration n
Coherent demodulators
Connection Diagrams
Metal Can Package
DS007853-2Order Number LM565H See NS Package Number H10C Dual-in-Line Package
DS007853-3
Order Number LM565CN See NS Package Number N14A
May 1999
LM565/LM565C Phase Locked Loop
©1999National Semiconductor Corporation DS007853www.national
Absolute Maximum Ratings(Note1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
Supply Voltage±12V Power Dissipation(Note2)1400mW Differential Input Voltage±1V Operating Temperature Range
LM565H−55˚C to+125˚C LM565CN0˚C to+70˚C Storage Temperature Range−65˚C to+150˚C Lead Temperature
(Soldering,10sec.)260˚C
Electrical Characteristics AC Test Circuit,T A=25˚C,V CC=±6V
Parameter Conditions
LM565LM565C
Units Min Typ Max Min Typ Max
Power Supply Current8.012.58.012.5mA Input Impedance(Pins2,3)−4V<V2,V3<0V7105kΩ
VCO Maximum Operating Frequency C o=2.7pF
300500250500kHz
VCO Free-Running Frequency C o=1.5nF
R o=20kΩ
f o=10kHz
−100+10−300+30%
和田裕美Operating Frequency
Temperature Coefficient
−100−200ppm/˚C Frequency Drift with
Supply Voltage
0.1 1.00.2 1.5%/V Triangle Wave Output Voltage2 2.432 2.43V p-p Triangle Wave Output Linearity0.20.5% Square Wave Output Level 4.7 5.4 4.7 5.4V p-p Output Impedance(Pin4)55kΩSquare Wave Duty Cycle455055405060% Square Wave Rise Time2020ns Square Wave Fall Time5050ns Output Current Sink(Pin4)0.610.61mA VCO Sensitivity f o=10kHz66006600Hz/V
Demodulated Output Voltage (Pin7)±10%Frequency Deviation
250300400200300450mV p-p
Total Harmonic Distortion±10%Frequency Deviation0.20.750.2 1.5% Output Impedance(Pin7) 3.5 3.5kΩDC Level(Pin7) 4.25 4.5 4.75 4.0 4.5 5.0V Output Offset Voltage
|V7−V6|
3010050200mV Temperature Drift of|V7−V6|500500µV/˚C AM Rejection304040dB Phase Detector Sensitivity K D0.680.68V/radian Note1:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.Operating Ratings indicate conditions for which the device is func-tional,but do not guarantee specific performance limits.Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-antee specific performance limits.This assumes that the device is within the Operating Ratings.Specifications are not guaranteed for parameters where no limit is given,however,the typical value is a good indication of device performance.
Note2:The maximum junction temperature of the LM565and LM565C is+150˚C.For operation at elev
ated temperatures,devices in the TO-5package must be derated based on a thermal resistance of+150˚C/W junction to ambient or+45˚C/W junction to case.Thermal resistance of the dual-in-line package is+85˚C/W.
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Typical Performance Characteristics
Power Supply Current as a
Function of Supply Voltage
DS007853-14
Lock Range as a Function
of Input Voltage
DS007853-15
VCO Frequency
DS007853-16
Oscillator Output
Waveforms
胭脂扣歌词
DS007853-17
Phase Shift vs Frequency
DS007853-18
VCO Frequency as a
Function of Temperature
DS007853-19elvenpath
Loop Gain vs Load
Resistance
DS007853-20
Hold in Range as a
Function of R6–7
DS007853-21
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Schematic Diagram
D S 007853-1
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AC Test Circuit
Typical Applications
Note:S 1open for output offset voltage (V 7−V 6)measurement.
2400Hz Synchronous AM Demodulator
DS007853-6
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