LM193 LM293 LM393 LM2903

LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual Comparators General Description The LM193 series consists of two independent precision voltage comparators with an offset voltage specification as low as 2.0 mV max for two comparators which were de- signed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. These comparators also have a unique characteris- tic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage. Application areas include limit comparators, simple analog to digital converters; pulse, squarewave and time delay gen- erators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. The LM193 series was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, the LM193 series will directly interface with MOS logic where their low power drain is a distinct advantage over standard comparators. The LM393 and LM2903 parts are available in National’s innovative thin micro SMD package with 8 (12 mil) large bumps. Advantages n High precision comparators n Reduced VOS drift over temperature n Eliminates need for dual supplies n Allows sensing near ground n Compatible with all forms of logic n Power drain suitable for battery operation Features n Wide supply — Voltage range: 2.0V to 36V — Single or dual supplies: ±1.0V to ±18V n Very low supply current drain (0.4 mA) — independent of supply voltage n Low input biasing current: 25 nA n Low input offset current: ±5 nA n Maximum offset voltage: ±3 mV n Input common-mode voltage range includes ground n Differential input voltage range equal to the power supply voltage n Low output saturation voltage,: 250 mV at 4 mA n Output voltage compatible with TTL, DTL, ECL, MOS and CMOS logic systems n Available in the 8-Bump (12 mil) micro SMD package n See AN-1112 for micro SMD considerations Squarewave Oscillator Non-Inverting Comparator with Hysteresis 00570938 00570909 August 2002 LM 193/LM 293/LM 393/LM 2903 Low Pow erLow OffsetV oltage DualCom parators © 2002 National Semiconductor Corporation DS005709 www.national.com Schematic and Connection Diagrams 00570902 Metal Can Package Dual-In-Line/SOIC Package 00570903 00570901 micro SMD micro SMD Marking 00570945 Top View 00570946 Top View LM 19 3/ LM 29 3/ LM 39 3/ LM 29 03 www.national.com 2 Absolute Maximum Ratings (Note 10) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, V+ 36V Differential Input Voltage (Note 8) 36V Input Voltage −0.3V to +36V Input Current (VIN<−0.3V) (Note 3) 50 mA Power Dissipation (Note 1) Molded DIP 780 mW Metal Can 660 mW Small Outline Package 510 mW micro SMD Pacakge 568mW Output Short-Circuit to Ground (Note 2) Continuous Operating Temperature Range LM393 0˚C to +70˚C LM293 −25˚C to +85˚C LM193/LM193A −55˚C to +125˚C LM2903 −40˚C to +85˚C Storage Temperature Range −65˚C to +150˚C Lead Temperature (Soldering, 10 seconds) +260˚C Soldering Information Dual-In-Line Package Soldering (10 seconds) 260˚C Small Outline Package 215˚C Vapor Phase (60 seconds) Infrared (15 seconds) 220˚C See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount devices. ESD rating (1.5 kΩ in series with 100 pF) 1300V Electrical Characteristics (V+=5V, TA = 25˚C, unless otherwise stated) Parameter Conditions LM193A Units Min Typ Max Input Offset Voltage (Note 9) 1.0 2.0 mV Input Bias Current IIN(+) or IIN(−) with Output In Linear 25 100 nA Range, VCM = 0V (Note 5) Input Offset Current IIN(+)−IIN(−) VCM = 0V 3.0 25 nA Input Common Mode V+ = 30V (Note 6) 0 V+−1.5 V Voltage Range Supply Current RL=∞ V+=5V 0.4 1 mA V+=36V 1 2.5 mA Voltage Gain RL≥15 kΩ, V+=15V 50 200 V/mV VO = 1V to 11V Large Signal Response VIN=TTL Logic Swing, VREF=1.4V 300 ns Time VRL=5V, RL=5.1 kΩ Response Time VRL=5V, RL=5.1 kΩ (Note 7) 1.3 µs Output Sink Current VIN(−)=1V, VIN(+)=0, VO≈1.5V 6.0 16 mA Saturation Voltage VIN(−)=1V, VIN(+)=0, ISINK≤4 mA 250 400 mV Output Leakage Current VIN(−)=0, VIN(+)=1V, VO=5V 0.1 nA Electrical Characteristics (V+=5V, TA = 25˚C, unless otherwise stated) Parameter Conditions LM193 LM293, LM393 LM2903 Units Min Typ Max Min Typ Max Min Typ Max Input Offset Voltage (Note 9) 1.0 5.0 1.0 5.0 2.0 7.0 mV Input Bias Current IIN(+) or IIN(−) with Output In 25 100 25 250 25 250 nA Linear Range, VCM = 0V (Note 5) Input Offset Current IIN(+)−IIN(−) VCM = 0V 3.0 25 5.0 50 5.0 50 nA Input Common Mode V+ = 30V (Note 6) 0 V+−1.5 0 V+−1.5 0 V+−1.5 V Voltage Range LM 193/LM 293/LM 393/LM 2903 www.national.com3 Electrical Characteristics (Continued) (V+=5V, TA = 25˚C, unless otherwise stated) Parameter Conditions LM193 LM293, LM393 LM2903 Units Min Typ Max Min Typ Max Min Typ Max Supply Current RL=∞ V+=5V 0.4 1 0.4 1 0.4 1.0 mA V+=36V 1 2.5 1 2.5 1 2.5 mA Voltage Gain RL≥15 kΩ, V+=15V 50 200 50 200 25 100 V/mV VO = 1V to 11V Large Signal Response VIN=TTL Logic Swing, VREF=1.4V 300 300 300 ns Time VRL=5V, RL=5.1 kΩ Response Time VRL=5V, RL=5.1 kΩ (Note 7) 1.3 1.3 1.5 µs Output Sink Current VIN(−)=1V, VIN(+)=0, VO≤1.5V 6.0 16 6.0 16 6.0 16 mA Saturation Voltage VIN(−)=1V, VIN(+)=0, ISINK≤4 mA 250 400 250 400 250 400 mV Output Leakage Current VIN(−)=0, VIN(+)=1V, VO=5V 0.1 0.1 0.1 nA Electrical Characteristics (V+ = 5V) (Note 4) Parameter Conditions LM193A Units Min Typ Max Input Offset Voltage (Note 9) 4.0 mV Input Offset Current IIN(+)−IIN(−), VCM=0V 100 nA Input Bias Current IIN(+) or IIN(−) with Output in Linear Range, 300 nA VCM=0V (Note 5) Input Common Mode Voltage Range V+=30V (Note 6) 0 V+−2.0 V Saturation Voltage VIN(−)=1V, VIN(+)=0, ISINK≤4 mA 700 mV Output Leakage Current VIN(−)=0, VIN(+)=1V, VO=30V 1.0 µA Differential Input Voltage Keep All VIN’s≥0V (or V−, if Used), (Note 8) 36 V Electrical Characteristics (V+ = 5V) (Note 4) Parameter Conditions LM193 LM293, LM393 LM2903 Units Min Typ Max Min Typ Max Min Typ Max Input Offset Voltage (Note 9) 9 9 9 15 mV Input Offset Current IIN(+)−IIN(−), VCM=0V 100 150 50 200 nA Input Bias Current IIN(+) or IIN(−) with Output in Linear Range, VCM=0V (Note 5) 300 400 200 500 nA Input Common Mode Voltage Range V+=30V (Note 6) 0 V+−2.0 0 V+−2.0 0 V+−2.0 V Saturation Voltage VIN(−)=1V, VIN(+)=0, ISINK≤4 mA 700 700 400 700 mV Output Leakage Current VIN(−)=0, VIN(+)=1V, VO=30V 1.0 1.0 1.0 µA Differential Input Voltage Keep All VIN’s≥0V (or V−, if Used), (Note 8) 36 36 36 V Note 1: For operating at high temperatures, the LM393 and LM2903 must be derated based on a 125˚C maximum junction temperature and a thermal resistance of 170˚C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The LM193/LM193A/LM293 must be derated based on a 150˚C maximum junction temperature. The low bias dissipation and the “ON-OFF” characteristic of the outputs keeps the chip dissipation very small (PD≤100 mW), provided the output transistors are allowed to saturate. Note 2: Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output current is approximately 20 mA independent of the magnitude of V+. Note 3: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action LM 19 3/ LM 29 3/ LM 39 3/ LM 29 03 www.national.com 4 Electrical Characteristics (Continued) on the IC chip. This transistor action can cause the output voltages of the comparators to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than −0.3V. Note 4: These specifications are limited to −55˚C≤TA≤+125˚C, for the LM193/LM193A. With the LM293 all temperature specifications are limited to −25˚C≤TA≤+85˚C and the LM393 temperature specifications are limited to 0˚C≤TA≤+70˚C. The LM2903 is limited to −40˚C≤TA≤+85˚C. Note 5: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exists on the reference or input lines. Note 6: The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode voltage range is V+−1.5V at 25˚C, but either or both inputs can go to 36V without damage, independent of the magnitude of V+. Note 7: The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be obtained, see typical performance characteristics section. Note 8: Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than −0.3V (or 0.3V below the magnitude of the negative power supply, if used). Note 9: At output switch point, VO.1.4V, RS=0Ω with V+ from 5V to 30V; and over the full input common-mode range (0V to V+−1.5V), at 25˚C. Note 10: Refer to RETS193AX for LM193AH military specifications and to RETS193X for LM193H military specifications. Ordering Information Package Temperature Range Part Number NSC Drawing 8-Pin Metal Can −55˚C to 125˚C LM193H* H08C LM193H/883 LM193H-MLS LM193AH-MLS LM193AH-QMLV** LM193AH LM193AH/883 −25˚C to 85˚C LM293H 0˚C to 70˚C LM393H 8-Pin Ceramic DIP −55˚C to 125˚C LM193J/883* J08A LM193AJ/883 LM193AJ-QMLV** LM193AJ-MLS 8-Pin Molded DIP 0˚C to 70˚C LM393N N08E −40˚C to 85˚C LM2903N 8-Pin SOIC 0˚C to 70˚C LM393M M08A LM393MX −40˚C to 85˚C LM2903M LM2903MX 8-Bump (12 mils) micro SMD 0˚C to 70˚C LM393TL TLA08AAA LM393TLX −40˚C to 85˚C LM2903ITL LM2903ITLX Note: * Also available per LM38510/11202 Note: ** See STD Mil DWG 5962-94526 LM 193/LM 293/LM 393/LM 2903 www.national.com5 Typical Performance Characteristics LM193/LM293/LM393, LM193A Supply Current Input Current 00570925 00570926 Output Saturation Voltage Response Time for Various Input Overdrives — Negative Transition 00570927 00570928 Response Time for Various Input Overdrives — Positive Transition 00570929 LM 19 3/ LM 29 3/ LM 39 3/ LM 29 03 www.national.com 6 Typical Performance Characteristics LM2903 Supply Current Input Current 00570930 00570931 Output Saturation Voltage Response Time for Various Input Overdrives — Negative Transition 00570932 00570933 Response Time for Various Input Overdrives — Positive Transition 00570934 LM 193/LM 293/LM 393/LM 2903 www.national.com7 Application Hints The LM193 series are high gain, wide bandwidth devices which, like most comparators, can easily oscillate if the output lead is inadvertently allowed to capacitively couple to the inputs via stray capacitance. This shows up only during the output voltage transition intervals as the comparator change states. Power supply bypassing is not required to solve this problem. Standard PC board layout is helpful as it reduces stray input-output coupling. Reducing the input re- sistors to < 10 kΩ reduces the feedback signal levels and finally, adding even a small amount (1.0 to 10 mV) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to stray feedback are not possible. Simply socketing the IC and attaching resistors to the pins will cause input-output oscillations during the small transition intervals unless hysteresis is used. If the input signal is a pulse waveform, with relatively fast rise and fall times, hysteresis is not required. All input pins of any unused comparators should be tied to the negative supply. The bias network of the LM193 series establishes a drain current which is independent of the magnitude of the power supply voltage over the range of from 2.0 VDC to 30 VDC. It is usually unnecessary to use a bypass capacitor across the power supply line. The differential input voltage may be larger than V+ without damaging the device (Note 8). Protection should be provided to prevent the input voltages from going negative more than −0.3 VDC (at 25˚C). An input clamp diode can be used as shown in the applications section. The output of the LM193 series is the uncommitted collector of a grounded-emitter NPN output transistor. Many collectors can be tied together to provide an output OR’ing function. An output pull-up resistor can be connected to any available power supply voltage within the permitted supply voltage range and there is no restriction on this voltage due to the magnitude of the voltage which is applied to the V+ terminal of the LM193 package. The output can also be used as a simple SPST switch to ground (when a pull-up resistor is not used). The amount of current which the output device can sink is limited by the drive available (which is independent of V+) and the β of this device. When the maximum current limit is reached (approximately 16mA), the output transistor will come out of saturation and the output voltage will rise very rapidly. The output saturation voltage is limited by the ap- proximately 60Ω rSAT of the output transistor. The low offset voltage of the output transistor (1.0mV) allows the output to clamp essentially to ground level for small load currents. Typical Applications (V+=5.0 VDC) Basic Comparator Driving CMOS Driving TTL 00570935 00570936 00570937 Squarewave Oscillator Pulse Generator Crystal Controlled Oscillator 00570938 00570939 * For large ratios of R1/R2, D1 can be omitted. 00570940 LM 19 3/ LM 29 3/ LM 39 3/ LM 29 03 www.national.com 8 Typical Applications (V+=5.0 VDC) (Continued) Two-Decade High Frequency VCO 00570941 V* = +30 VDC +250 mVDC ≤ VC ≤ +50 VDC 700Hz ≤ fo ≤ 100kHz Basic Comparator Non-Inverting Comparator with Hysteresis 00570906 00570909 Inverting Comparator with Hysteresis Output Strobing 00570910 00570911 LM 193/LM 293/LM 393/LM 2903 www.national.com9 Typical Applications (V+=5.0 VDC) (Continued) AND Gate OR Gate 00570912 00570913 Large Fan-in AND Gate Limit Comparator 00570914 00570915 Comparing Input Voltages of Opposite Polarity ORing the Outputs 00570916 00570917 LM 19 3/ LM 29 3/ LM 39 3/ LM 29 03 www.national.com 10 Typical Applications (V+=5.0 VDC) (Continued) Zero Crossing Detector (Single Power Supply) One-Shot Multivibrator 00570921 00570922 Bi-Stable Multivibrator One-Shot Multivibrator with Input Lock Out 00570924 00570923 Zero Crossing Detector Comparator With a Negative Reference 00570943 00570944 LM 193/LM 293/LM 393/LM 2903 www.national.com11 Typical Applications (V+=5.0 VDC) (Continued) Time Delay Generator 00570907 Split-Supply Applications (V+=+15 VDC and V−=−15 VDC) MOS Clock Driver 00570942 LM 19 3/ LM 29 3/ LM 39 3/ LM 29 03 www.national.com 12 Physical Dimensions inches (millimeters) unless otherwise noted Metal Can Package (H) NS Package Number H08C Ceramic Dual-In-Line Package NS Package Number J08A LM 193/LM 293/LM 393/LM 2903 www.national.com13 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) SOIC Package NS Package Number M08A Molded Dual-In-Line Package (N) NS Package N08E LM 19 3/ LM 29 3/ LM 39 3/ LM 29 03 www.national.com 14 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) NOTE: UNLESS OTHERWISE SPECIFIED 1. EPOXY COATING 2. 63Sn/37Pb EUTECTIC BUMP 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION REMAINING PINS ARE NUMBERED COUNTERCLOCKWISE. 5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACKAGE LENGTH AND X3 IS PACKAGE HEIGHT. 6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC. 8-Bump (12 mil) micro SMD Package NS Package TLA08AAA X1 = 1.514mm X2 = 1.514mm X3 = 0.600mm 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 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 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. 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 Corporation Americas Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com LM 193/LM 293/LM 393/LM 2903 Low Pow erLow OffsetV oltage DualCom parators 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. LM193/LM293/LM393/LM2903 General Description Advantages Features Schematic and Connection Diagrams Absolute Maximum Ratings Electrical Characteristics Electrical Characteristics Electrical Characteristics Electrical Characteristics Ordering Information Typical Performance Characteristics Typical Performance Characteristics Application Hints Typical Applications Split-Supply Applications Physical Dimensions