常用运放IC LM2903（可编辑）

常用运放IC LM2903（可编辑） 常用运放IC LM2903 L August 2002 M 1 9 3 / L M 2 LM193/LM293/LM393/LM2903 9 Low Power Low Offset Voltage Dual Comparators 3 / L General Description Advantages M The LM193 series consists of two independent precision n High precision comparators 3 voltage comparators with an offset voltage specification as n Reduced V drift over temperature 9 3 OS low as 2.0 mV for two comparators which were de- n Eliminates need for dual supplies / signed specifically to operate from a single power supply n Allows sensing near ground L over a wide range of voltages. Operation from split power n Compatible with all forms of logic M supplies is also possible and the low power supply current 2 9 n Power drain suitable for battery operation drain is independent of the magnitude of the power supply 0 3 voltage. These comparators also have a unique characteris- Features tic in that the input common-mode voltage range includes ground, even though operated from a single power supply n Wide supply L voltage. ― Voltage range: 2.0V to 36V o Application areas include limit comparators, simple analog to ― Single or dual supplies: ?1.0V to ?18V w digital converters; pulse, squarewave and time delay gen- n Very low supply current drain 0.4 mA ― independent P erators; wide range VCO; MOS clock timers; multivibrators of supply voltage o and high voltage digital logic gates. The LM193 series was n Low input biasing current: 25 nA w designed to directly interface with TTL and CMOS. When n Low input offset current: ?5 nA e operated from both plus and minus power supplies, the n imum offset voltage: ?3 mV r LM193 series will directly interface with MOS logic where L o n Input common-mode voltage range includes ground their low power drain is a distinct advantage over standard comparators. n Differential input voltage range equal to the power w supply voltage The LM393 and LM2903 parts are available in National’s n Low output saturation voltage,: 250 mV at 4 mA O innovative thin micro SMD package with 8 12 mil large f n Output voltage compatible with TTL, DTL, ECL, MOS f bumps. s e and CMOS logic systems n Available in the 8-Bump 12 mil micro SMD package t n See AN-1112 for micro SMD considerations V o l t a Squarewave Oscillator Non-Inverting Comparator with Hysteresis g e D u a l C o m p a r a 00570909 t o r 00570938 s ? 2002 National Semiconductor Corporation DS005709 3 0 9 Schematic and Connection Diagrams 2 M L / 3 9 3 M L / 3 9 2 M L / 3 9 1 M L 00570902 Metal Can Package Dual-In-Line/SOIC Package 00570901 00570903 micro SMD micro SMD Marking 00570945 Top View 00570946 Top View 2 L M LM193/LM193A ?55?C to +125?C 1 Absolute imum Ratings Note 10 9 3 If Military/Aerospace specified devices are required, LM2903 ?40?C to +85?C / L please contact the National Semiconductor Sales Office/ Storage Temperature Range ?65?C to +150?C M Distributors for availability and specifications. 2 Lead Temperature 9 3 / + L Supply Voltage, V 36V Soldering, 10 seconds +260?C M 3 Differential Input Voltage Note 8 36V Soldering Information 9 Input Voltage ?0.3V to +36V Dual-In-Line Package 3 / L M Input Current VIN ?0.3V Note 3 50 mA Soldering 10 seconds 260?C Power Dissipation Note 1 2 Small Outline Package 215?C 9 0 3 Molded DIP 780 mW Vapor Phase 60 seconds Metal Can 660 mW Infrared 15 seconds 220?C Small Outline Package 510 mW See AN-450 “Surface Mounting Methods and Their Effect micro SMD Pacakge 568mW on Product Reliability” for other methods of soldering Output Short-Circuit to Ground surface mount devices. Note 2 Continuous ESD rating Operating Temperature Range 1.5 k? in series with 100 pF 1300V LM393 0?C to +70?C LM293 ?25?C to +85?C Electrical Characteristics + V 5V, TA 25?C, unless otherwise stated Parameter Conditions LM193A Units Min Typ 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 R + L?15 k?, V 15V 50 200 V/mV VO 1V to 11V Large Signal Response VIN TTL Logic Swing, VREF 1.4V 300 ns Time V 5V, R 5.1 k? RL L Response Time V 5V, R 5.1 k? Note 7 1.3 μs RL L 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 Min Typ Min Typ 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 3 3 0 9 Electrical Characteristics Continued 2 M + V 5V, TA 25?C, unless otherwise stated L / 3 Parameter Conditions LM193 LM293, LM393 LM2903 Units 9 3 Min Typ Min Typ Min Typ M + L Supply Current RL ? V 5V 0.4 1 0.4 1 0.4 1.0 mA / 3 9 V+ 36V 1 2.5 1 2.5 1 2.5 mA 2 Voltage Gain R + M L?15 k?, V 15V 50 200 50 200 25 100 V/mV L / VO 1V to 11V 3 9 1 Large Signal Response VIN TTL Logic Swing, VREF 1.4V 300 300 300 ns M Time V 5V, R 5.1 k? L RL L Response Time V 5V, R 5.1 k? Note 7 1.3 1.3 1.5 μs RL L 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 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 V+ + 30V Note 6 0 V ?2.0 V Voltage Range 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 V ? IN’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 Min Typ Min Typ 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 300 400 200 500 nA Linear Range, VCM 0V Note 5 + + + + Input Common Mode V 30V Note 6 0 V ?2.0 0 V ?2.0 0 V ?2.0 V Voltage Range Saturation Voltage VIN ? 1V, VIN + 0, 700 700 400 700 mV ISINK?4 mA Output Leakage Current VIN ? 0, VIN + 1V, VO 30V 1.0 1.0 1.0 μA Differential Input Voltage Keep All V ? IN’s?0V or V , if 36 36 36 V Used , Note 8 Note 1: For operating at high temperatures, the LM393 and LM2903 must be derated based on a 125?C imum 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 imum 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 imum 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 4 L M Electrical Characteristics Continued 1 9 3 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 L to a value greater than ?0.3V. M 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 2 ?25?C?T ?+85?C and the LM393 temperature specifications are limited to 0?C?T ?+70?C. The LM2903 is limited to ?40?C?T ?+85?C. 9 3 A A A / 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 L no loading change exists on the reference or input lines. M 3 9 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 3 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 L characteristics section. M 2 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 9 0 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, 3 if used . Note 9: At output switch point, V + + .1.4V, R 0? with V from 5V to 30V; and over the full input common-mode range 0V to V ?1.5V , at 25?C. O S 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 LM193H* LM193H/883 LM193H-MLS ?55?C to 125?C LM193AH-MLS 8-Pin Metal Can LM193AH-QMLV** H08C LM193AH LM193AH/883 ?25?C to 85?C LM293H 0?C to 70?C LM393H LM193J/883* LM193AJ/883 8-Pin Ceramic DIP ?55?C to 125?C J08A LM193AJ-QMLV** LM193AJ-MLS 0?C to 70?C LM393N 8-Pin Molded DIP N08E ?40?C to 85?C LM2903N LM393M 0?C to 70?C LM393MX 8-Pin SOIC M08A LM2903M ?40?C to 85?C LM2903MX LM393TL 0?C to 70?C 8-Bump 12 mils LM393TLX TLA08AAA micro SMD LM2903ITL ?40?C to 85?C LM2903ITLX Note: * Also available per LM38510/11202 Note: ** See STD Mil DWG 5962-94526 5 3 0 9 Typical Performance Characteristics LM193/LM293/LM393, LM193A 2 M L Supply Current Input Current / 3 9 3 M L / 3 9 2 M L / 3 9 1 M L 00570925 00570926 Response Time for Various Input Overdrives ― Negative Output Saturation Voltage Transition 00570928 00570927 Response Time for Various Input Overdrives ― Positive Transition 00570929 6 L M 1 9 Typical Performance Characteristics LM2903 3 / Supply Current Input Current L M 2 9 3 / L M 3 9 3 / L M 2 9 0 3 00570931 00570930 Response Time for Various Input Overdrives ― Negative Output Saturation Voltage Transition 00570933 00570932 Response Time for Various Input Overdrives ― Positive Transition 00570934 7 3 0 9 Application Hints 2 M L The LM193 series are high gain, wide bandwidth devices The differential input voltage may be larger than V+ without / 3 which, like most comparators, can easily oscillate if the damaging the device Note 8 . Protection should be provided 9 3 output lead is inadvertently allowed to capacitively couple to to prevent the input voltages from going negative more than M the inputs via stray capacitance. This shows up only during ?0.3 VDC at 25?C . An input clamp diode can be used as L / the output voltage transition intervals as the comparator shown in the applications section. 3 9 change states. Power supply bypassing is not required to The output of the LM193 series is the uncommitted collector 2 M solve this problem. Standard PC board layout is helpful as it of a grounded-emitter NPN output transistor. Many collectors L reduces stray input-output coupling. Reducing the input re- / can be tied together to provide an output OR’ing function. An 3 sistors to 10 k? reduces the feedback signal levels and 9 output pull-up resistor can be connected to any available 1 finally, adding even a small amount 1.0 to 10 mV of positive power supply voltage within the permitted supply voltage M L feedback hysteresis causes such a rapid transition that range and there is no restriction on this voltage due to the oscillations due to stray feedback are not possible. Simply magnitude of the voltage which is applied to the V+ terminal socketing the IC and attaching resistors to the pins will cause of the LM193 package. The output can also be used as a input-output oscillations during the small transition intervals simple SPST switch to ground when a pull-up resistor is not unless hysteresis is used. If the input signal is a pulse used . The amount of current which the output device can waveform, with relatively fast rise and fall times, hysteresis is sink is limited by the drive available which is independent of not required. V+ and the β of this device. When the imum current limit All input pins of any unused comparators should be tied to is reached approximately 16mA , the output transistor will the negative supply. come out of saturation and the output voltage will rise very The bias network of the LM193 series establishes a drain rapidly. The output saturation voltage is limited by the ap- current which is independent of the magnitude of the power proximately 60? rSAT of the output transistor. The low offset supply voltage over the range of from 2.0 VDC to 30 VDC. voltage of the output transistor 1.0mV allows the output to clamp essentially to ground level for small load currents. It is usually unnecessary to use a bypass capacitor across the power supply line. + Typical Applications V 5.0 VDC Basic Comparator Driving CMOS Driving TTL 00570935 00570937 00570936 Squarewave Oscillator Pulse Generator Crystal Controlled Oscillator 00570938 00570940 00570939 * For large ratios of R1/R2, D1 can be omitted. 8 L M + 1 Typical Applications V 5.0 V Continued 9 DC 3