LM760CN

LM760 High Speed Differential Comparator December 1994 LM760 High Speed Differential Comparator General Description The LM760 is a differential voltage comparator offering considerable speed improvement over the LM710 family and operates from symmetric supplies of g 4 5V to g 6 5V The LM760 can be used in high speed analog-to-digital conversion systems and as a zero crossing detector in disc file and tape amplifiers The LM760 output features balanced rise and fall times for minimum skew and close matching between the complementary outputs The outputs are TTL compatible with a minimum sink capability of two gate loads Features Y Y Y Y Y Guaranteed high speed 25 ns response time Guaranteed delay matching on both outputs Complementary TTL compatible outputs High sensitivity Standard supply voltages Applications Y Y High speed A-to-D Peak or zero detector Connection Diagram 8-Lead DIP TL H 10067 – 3 Top View Ordering Information Temperature Range Commercial 0 C to a 70 C LM760CN Package Type 8-lead Plastic DIP NSC Package Drawing N08E C1995 National Semiconductor Corporation TL H 10067 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 Storage Temperature Range Metal Can and Ceramic DIP Molded DIP Operating Temperature Range Military (LM760) Commercial (LM760C) Lead Temperature Metal Can and Ceramic DIP (Soldering 60 sec ) Molded DIP (Soldering 10 sec ) b 65 C to a 175 C b 65 C to a 150 C b 55 C to a 125 C 0 C to a 70 C Positive Supply Voltage Negative Supply Voltage Peak Output Current Differential Input Voltage Input Voltage ESD Susceptibility a 8 0V b 8 0V 10 mA g 5 0V V a t VI t Vb TBD 300 C 265 C LM760 Electrical Characteristics VCC e g 4 5V to g 6 5V TA e b55 C to a 125 C TA e 25 C for typical figures unless otherwise specified Symbol Parameter Conditions Min Typ Max VIO IIO IIB RO tPD Input Offset Voltage Input Offset Current Input Bias Current Output Resistance (Either Output) Response Time VO e VOH TA e 25 C (Note 3) TA e 25 C (Note 4) (Note 5) DtPD Response Time Difference between Outputs (Note 1) (tPD of a VI1) b (tPD of bVI2) (tPD of a VI2) b (tPD of bVI1) (tPD of a VI1) b (tPD of a VI2) (tPD of bVI1) b (tPD of bVI2) RI CI DVIO DT DIIO DT VIR VIDR VOH Input Resistance Input Capacitance Average Temperature Coefficient of Input Offset Voltage Average Temperature Coefficient of Input Offset Current Input Voltage Range Differential Input Voltage Range Output Voltage HIGH (Either Output) Output Voltage LOW (Either Output) Positive Supply Current Negative Supply Current 0 mA s IOH s 5 0 mA VCC e a 5 0V IOH e 80 mA VCC e g 4 5V VOL Ia Ib IOL e 3 2 mA VCC e g 6 5V VCC e g 6 5V 24 24 16 RS s 200X 10 05 80 100 18 30 25 ns 60 75 60 Units mV mA mA X TA e 25 C TA e 25 C TA e 25 C TA e 25 C f e 1 0 MHz f e 1 0 MHz RS e 50X TA e b55 C to a 125 C TA e a 25 C to a 125 C TA e a 25 C to b55 C VCC e g 6 5V g4 0 50 50 75 75 12 80 30 20 70 g4 5 g5 0 ns kX pF mV C nA C V V V 32 30 0 25 18 90 04 32 16 V mA mA 2 LM760C Electrical Characteristics VCC e g 4 5V to g 6 5V TA e 0 C to a 70 C TA e 25 C for typical figures unless otherwise specified Symbol VIO IIO IIB RO tPD Parameter Input Offset Voltage Input Offset Current Input Bias Current Output Resistance (Either Output) Response Time VO e VOH TA e 25 C (Note 3) TA e 25 C (Note 4) (Note 5) DtPD Response Time Difference between Outputs (Note 1) (tPD of a VI1) b (tPD of bVI2) (tPD of a VI2) b (tPD of bVI1) (tPD of a VI1) b (tPD of a VI2) (tPD of bVI1) b (tPD of bVI2) RI CI DVIO DT DIIO DT VIR VIDR VOH Input Resistance Input Capacitance Average Temperature Coefficient of Input Offset Voltage Average Temperature Coefficient of Input Offset Current Input Voltage Range Differential Input Voltage Range Output Voltage HIGH (Either Output) Output Voltage LOW (Either Output) Positive Supply Current Negative Supply Current 0 mA s IOH s 5 0 mA VCC e a 5 0V IOH e 80 mA VCC e g 4 5V VOL Ia Ib IOL e 3 2 mA VCC e g 6 5V VCC e g 6 5V 24 25 16 Conditions RS s 200X Min Typ 10 05 80 100 18 30 25 ns Max 60 75 60 Units mV mA mA X TA e 25 C TA e 25 C TA e 25 C TA e 25 C f e 1 0 MHz f e 1 0 MHz RS e 50X TA e 0 C to a 70 C TA e a 25 C to a 70 C TA e a 25 C to 0 C VCC e g 6 5V g4 0 50 50 10 10 12 80 30 50 10 g4 5 g5 0 ns kX pF mV C nA C V V V 32 30 0 25 18 90 04 34 16 V mA mA Note 1 TJ Max e 150 C Note 2 Ratings apply to ambient temperature at 25 C Note 3 Response time measured from the 50% point of a 30 mVP–P 10 MHz sinusoidal input to the 50% point of the output Note 4 Response time measured from the 50% point of a 2 0 VP–P 10 MHz sinusoidal input to the 50% point of the output Note 5 Response time measured from the start of a 100 mV input step with 5 0 mV overdrive to the time when the output crosses the logic threshold 3 Typical Performance Characteristics Response Time for Various Output Overdrives Response Time for Various Input Overdrives Response Time vs Input Voltage Response Time vs Input Voltage Voltage Transfer Characteristic Voltage Transfer Characteristic Voltage Gain vs Supply Voltage Voltage Gain vs Temperature Input Bias Current vs Temperature Input Offset Current vs Temperature Response Time vs Temperature Output Voltage Levels vs Temperature TL H 10067 – 5 4 Typical Performance Characteristics (Continued) Rise Time vs Capacitive Load Fall Time vs Capacitive Load Input Bias Current vs Differential Input Voltage Common Mode Range vs Supply Voltage TL H 10067 – 6 Equivalent Circuit TL H 10067 – 4 5 Typical Applications (Note 1) Fast Positive Peak Detector Line Receiver with High Common Mode Range TL H 10067 – 10 Common mode range e g 4 c TL H 10067–7 RS V 50 RS mV 50 Differential Input Sensitivity e 5 c Level Detector with Hysteresis P1 must be adjusted for optimum common mode rejection For RS e 200X Common mode range e g 16V Sensitivity e 20 mV TL H 10067–8 Zero Crossing Detector (Note 2) TL H 10067 – 9 Total delay e 30 ns Input Frequency e 300 Hz to 3 0 MHz Minimum input voltage e 20 mVP–P Note 1 Lead numbers shown are for Metal Package only Note 2 All resistor values in ohms 6 Typical Applications (Note 1) (Continued) High Speed 3-Bit A D Converter TL H 10067 – 11 Input voltage range e 3 5V Typical conversion speed e 30 ns 7 8 Physical Dimensions inches (millimeters) 8-Lead Metal Can Package (H) Order Number LM760CH or LM760H NS Package Number H08A 8-Lead Ceramic Dual-In-Line Package (J) Order Number LM760CJ or LM760J NS Package Number J08A 9 LM760 High Speed Differential Comparator Physical Dimensions inches (millimeters) (Continued) 8-Pin Molded Dual-In-Line Package (N) Order Number LM760CN 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