LH2111/LH2311 Dual Voltage Comparators General Description Features The LH2111 series of dual voltage comparators are two LM111 type comparators in a single hermetic package. Featuring all the same performance characteristics of the single, these duals offer in addition closer thermal tracking, lower weight, reduced insertion cost and smaller size than two singles. For additional information see the LM111 data sheet and National’s Linear Application Handbook. The LH2111 is specified for operation over the −55˚C to +125˚C military temperature range. The LH2311 is specified for operation over the 0˚C to 70˚C temperature range. n n n n n Wide operating supply range ± 15V to a single +5V Low input currents 6 nA High sensitivity 10 µV Wide differential input range ± 30V High output drive 50 mA, 50V Connection Diagram DS010116-1 Order Number LH2111D, LH2111D/883 or LH2311D See NS Package Number D16C © 1997 National Semiconductor Corporation DS010116 www.national.com LH2111/LH2311 Dual Voltage Comparators August 1992 Absolute Maximum Ratings Input Voltage (Note 1) Power Dissipation (Note 2) Output Short Circuit Duration Operating Temperature Range LH2111 LH2311 Storage Temperature Range Lead Temperature (Soldering, 10 sec) (Note *NO TARGET FOR FNXref NS0050*) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Total Supply Voltage (V+ − V−) Output to Negative Supply Voltage (VOUT − V−) Ground to Negative Supply Voltage (GND − V−) Differential Input Voltage Electrical Characteristics 36V 50V 30V ± 30V ± 15V 500 mW 10 sec −55˚C to +125˚C 0˚C to +70˚C −65˚C to +150˚C 300˚C (Note 3) Each Side Parameter Input Offset Voltage (Note 4) Input Offset Current (Note 4) Conditions TA = 25˚C, RS ≤ 50k TA = 25˚C TA = 25˚C Limits Units LH2111 LH2311 3.0 7.5 mV Max nA Max 10 50 100 250 nA Max TA = 25˚C TA = 25˚C 200 200 V/mV Typ 200 200 ns Typ Saturation Voltage VIN ≤ −5 mV, IOUT = 50 mA TA = 25˚C 1.5 1.5 V Max Strobe On Current TA = 25˚C 3.0 3.0 mA Typ Output Leakage Current VIN ≥ 5 mV, VOUT = 35V TA = 25˚C 10 50 nA Max Input Offset Voltage (Note 4) RS ≤ 50k mV Max Input Bias Current Voltage Gain Response Time (Note 5) 4.0 10 Input Offset Current (Note 4) 20 70 nA Max Input Bias Current 150 300 nA Max ± 14 ± 14 V Typ Saturation Voltage V+ ≥ 4.5V, V− = 0 0.4 0.4 V Max Positive Supply Current VIN ≤ −5 mV, ISINK ≤ 8 mA TA = 25˚C 6.0 7.5 mA Max Negative Supply Current TA = 25˚C 5.0 5.0 mA Max Input Voltage Range Note 1: This rating applies for ± 15V supplies. The positive input voltage limit is 30V above the negative supply. The negative input voltage limit is equal to the negative supply voltage or 30V below the positive supply, whichever is less. Note 2: The maximum junction temperature is 150˚C. For operating at elevated temperatures, devices in the flat package, the derating is based on a thermal resistance of 185˚C/W when mounted on a 1/16-inch-thick epoxy glass board with 0.03-inch-wide, 2 ounce copper conductor. The thermal resistance of the dual-in-line package is 100˚C/W, junction to ambient. Note 3: These specifications apply for VS = ± 15V and −55˚C ≤ TA ≤ 125˚C for the LH2111, and 0˚C ≤ TA ≤ 70˚C for the LH2311, unless otherwise stated. The offset voltage, offset current and bias current specifications apply for any supply voltage from a single 5V supply up to ± 15V supplies. For the LH2311, VIN = ± 10 mV. Note 4: The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with a 1 mA load. Thus, these parameters define an error band and take into account the worst case effects of voltage gain and input impedance. Note 5: The response time specified is for a 100 mV input step with 5 mV overdrive. Note 6: RETS2111X for the LH2111D and LH2111F military specifications. www.national.com 2 Auxiliary Circuits Offset Balancing Strobing Increasing Input Stage Current* DS010116-4 *Increases typical common mode slew from 7.0 V/µs to 18 V/µs DS010116-2 DS010116-3 Driving Ground-Referred Load Using Clamp Diodes to Improve Responses DS010116-6 DS010116-5 Strobing off Both Input* and Output Stages Comparator and Solenoid Driver DS010116-7 DS010116-8 *Typical input current is 50 pA with inputs strobed off 3 www.national.com Auxiliary Circuits (Continued) TTL Interface with High Level Logic DS010116-9 *Values shown are for a 0V to 30V logic swing and a 15V threshold. †May be added to control speed and reduce susceptibility to noise spikes. www.national.com 4 5 LH2111/LH2311 Dual Voltage Comparators Physical Dimensions inches (millimeters) 16-Lead Hermetic Dual-In-Line Package (D) Order Number LH2111D, LH2111D/883 or LH2311D NS Package Number D16C 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: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or sysdevice or system whose failure to perform can be reatems which, (a) are intended for surgical implant into sonably expected to cause the failure of the life support the body, or (b) support or sustain life, and whose faildevice or system, or to affect its safety or effectiveness. ure 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. 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