LM566CN

LM566C Voltage Controlled Oscillator February 1995 LM566C Voltage Controlled Oscillator General Description The LM566CN is a general purpose voltage controlled oscillator which may be used to generate square and triangular waves the frequency of which is a very linear function of a control voltage The frequency is also a function of an external resistor and capacitor The LM566CN is specified for operation over the 0 C to a 70 C temperature range Y Y Y Y High temperature stability Excellent supply voltage rejection 10 to 1 frequency range with fixed capacitor Frequency programmable by means of current voltage resistor or capacitor Applications Y Y Y Y Y Features Y Y Wide supply voltage range 10V to 24V Very linear modulation characteristics FM modulation Signal generation Function generation Frequency shift keying Tone generation Connection Diagram Dual-In-Line Package Typical Application 1 kHz and 10 kHz TTL Compatible Voltage Controlled Oscillator TL H 7854 – 2 Order Number LM566CN See NS Package Number N08E TL H 7854 – 3 C1995 National Semiconductor Corporation TL H 7854 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Power Supply Voltage Power Dissipation (Note 1) Operating Temperature Range LM566CN Lead Temperature (Soldering 10 sec ) 26V 1000 mW 0 C to a 70 C a 260 C Electrical Characteristics VCC e 12V Parameter Maximum Operating Frequency VCO Free-Running Frequency Input Voltage Range Pin 5 Average Temperature Coefficient of Operating Frequency Supply Voltage Rejection Input Impedance Pin 5 VCO Sensitivity FM Distortion Maximum Sweep Rate Sweep Range Output Impedance Pin 3 Pin 4 Square Wave Output Level Triangle Wave Output Level Square Wave Duty Cycle Square Wave Rise Time Square Wave Fall Time Triangle Wave Linearity RL1 e 10k RL2 e 10k 10–20V TA e 25 C AC Test Circuit LM566C Min Typ 1 Max MHz Units Conditions R0 e 2k C0 e 2 7 pF CO e 1 5 nF RO e 20k fO e 10 kHz 05 b 30 0 a 30 % VCC 200 01 05 For Pin 5 From 8–10V fO e 10 kHz g 10% Deviation VCC ppm C 2 %V MX 72 15 kHz V % MHz 1 66 02 1 10 1 50 50 60 X X Vp-p Vp-p 60 % ns ns % 50 20 40 54 24 50 20 50 a 1V Segment at VCC 05 Note 1 The maximum junction temperature of the LM566CN is 150 C For operation at elevated junction temperatures maximum power dissipation must be derated based on a thermal resistance of 115 C W junction to ambient Applications Information The LM566CN may be operated from either a single supply as shown in this test circuit or from a split ( g ) power supply When operating from a split supply the square wave output (pin 3) is TTL compatible (2 mA current sink) with the addition of a 4 7 kX resistor from pin 3 to ground A 0 001 mF capacitor is connected between pins 5 and 6 to prevent parasitic oscillations that may occur during VCO switching fO e 2 4(V a b V5) RO CO V a where 2K k RO k 20K and V5 is voltage between pin 5 and pin 1 2 Schematic Diagram 3 TL H 7854 – 1 Typical Performance Characteristics Operating Frequency as a Function of Timing Resistor Operating Frequency as a Function of Timing Capacitor Normalized Frequency as a Function of Control Voltage Power Supply Current Temperature Stability VCO Waveforms Frequency Stability vs Load Resistance (Square Wave Output) Frequency Stability vs Load Impedance (Triangle Output) Square Wave Output Characteristics Triangle Wave Output Characteristics TL H 7854 – 4 AC Test Circuit TL H 7854 – 5 TL H 7854 – 6 4 5 LM566C Voltage Controlled Oscillator Physical Dimensions inches (millimeters) Molded Dual-In-Line Package (N) Order Number LM566CN NS Package Number N08E LIFE SUPPORT POLICY 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 OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which (a) are intended for surgical implant into the body or (b) support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user National Semiconductor Corporation 1111 West Bardin Road Arlington TX 76017 Tel 1(800) 272-9959 Fax 1(800) 737-7018 2 A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness National Semiconductor Europe Fax (a49) 0-180-530 85 86 Email cnjwge tevm2 nsc com Deutsch Tel (a49) 0-180-530 85 85 English Tel (a49) 0-180-532 78 32 Fran ais Tel (a49) 0-180-532 93 58 Italiano Tel (a49) 0-180-534 16 80 National Semiconductor Hong Kong Ltd 13th Floor Straight Block Ocean Centre 5 Canton Rd Tsimshatsui Kowloon Hong Kong Tel (852) 2737-1600 Fax (852) 2736-9960 National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications