CA3290 Datasheet

LM193 - Low Power Low Offset Voltage Dual Comparator, Package: TO-5, Pin Nb=8


Features, Applications

The LM193 series consists of two independent precision voltage comparators with an offset voltage specification as low 2.0 mV max for two comparators which were designed 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 characteristic 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 generators; 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.

High precision comparators Reduced VOS drift over temperature Eliminates need for dual supplies Allows sensing near ground Compatible with all forms of logic Power drain suitable for battery operation


n Wide supply Voltage range: � 18V Single or dual supplies: n Very low supply current drain (0.4 mA) independent of supply voltage n Low input biasing current: nA n Low input offset current: mV n Maximum offset voltage: n Input common-mode voltage range includes ground n Differential input voltage range equal to the power supply voltage n Low output saturation voltage,: 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

LM193/LM193A LM2903 Storage Temperature Range Lead Temperature (Soldering, 10 seconds) Soldering Information Dual-In-Line Package Soldering (10 seconds) Small Outline Package Vapor Phase (60 seconds) Infrared (15 seconds)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, V+ Differential Input Voltage (Note 8) Input Voltage Input Current (VIN < -0.3V) (Note 3) Power Dissipation (Note 1) Molded DIP Metal Can Small Outline Package micro SMD Pacakge Output Short-Circuit to Ground (Note 2) Operating Temperature Range to +85�C Continuous 50 mA

See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" for other methods of soldering surface mount devices. ESD rating k in series with 100 pF) 1300V

(V+ = 25�C, unless otherwise stated) Parameter Input Offset Voltage Input Bias Current Input Offset Current Input Common Mode Voltage Range Supply Current Voltage Gain Large Signal Response Time Response Time Output Sink Current Saturation Voltage Output Leakage Current to 11V VIN =TTL Logic Swing, VREF =1.4V VRL =5.1 k VRL =5.1 k (Note ns mA V/mV (Note 9) IIN(+) or IIN(-) with Output In Linear Range, VCM = 0V (Note 5) IIN(+)-IIN(-) VCM = 30V (Note V -1.5

(V+ = 25�C, unless otherwise stated) Parameter Input Offset Voltage Input Bias Current Input Offset Current Input Common Mode Voltage Range (Note 9) IIN(+) or IIN(-) with Output In Linear Range, VCM = 0V (Note 5) IIN(+)-IIN(-) VCM = 30V (Note nA V Conditions LM193 Min Typ 1.0 25 Max LM293, LM393 Min Typ 1.0 25 Max 250 LM2903 Min Typ 2.0 25 Max mV nA Units



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