National Semiconductor | High-performance Analog

 

 LM2903   
Low Power Low Offset Voltage Dual Comparator 		Click link to Download

Features
  • Wide supply

    Voltage range:

    2.0V to 36V

    Single or dual supplies:

    ±1.0V to ±18V

Very low supply current drain (0.4 mA) - independent of supply voltage

  

Low input biasing current:

25 nA

Low input offset current:

±5 nA

Maximum offset voltage:

±3 mV

Input common-mode voltage range includes ground

  

Differential input voltage range equal to the power supply voltage

  

Low output saturation voltage,:

250 mV at 4 mA

Output voltage compatible with TTL, DTL, ECL, MOS and CMOS logic systems

  

Available in the 8-Bump (12 mil) micro SMD package

  

See AN-1112 for micro SMD considerations

  

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 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.


Applications

  • 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

    • Also Recommended
    LMV393▲Lower Voltage, Lower Power Consumption



    Typical Application
    *click for larger image


    		Connection Diagram
    *click for larger image



    Typical Performance
    click for larger image


    Parameters / ValuesLM2903 LMV393
    Response Time0.4 us 0.2 us
    Output BusOpen Drain Open Drain
    Supply Min2 Volt 2.7 Volt
    Supply Max36 Volt 5.5 Volt
    Channels2 Channels 2 Channels
    Offset Voltage max, 25C7 mV 7 mV
    Output Current16 mA 84 mA
    Input RangeVcm to V- Vcm to V-
    Supply Current Per Channel0.2 mA 0.0425 mA
    PowerWise Rating 380 uA x us 9 uA x us
    Max Input Bias Current500 nA 400 nA
    Special FeaturesUndefined Undefined
    Temperature Min-40 deg C -40 deg C
    Temperature Max85 deg C 85 deg C
    FunctionComparator Comparator

    Datasheets
    TitleSizeDateOther
    Language
    LM2903 Low Power Low Offset Voltage Dual Comparator411
    Kbytes    		12-Aug-02日本語  

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM2903ITL/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide250
    DIGI-KEYWorldwide0
    MOUSERWorldwide1435
    TAYLORAmericas250
    		$0.27 each at 1K+ pcsreel
    of
    250
    LM2903ITLX/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.27 each at 1K+ pcsreel
    of
    3000
    LM2903M/NOPB

    LM2903M

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide4669
    AVNET-EMWorldwide1241
    BRITESTONESouth Korea25
    DIGI-KEYWorldwide2190
    FARNELLEurope and Asia5927
    MOUSERWorldwide943
    NEWARKAmericas4955
    RS COMPONENTSWorldwide1040
    TAYLORAmericas15607
    		$0.25 each at 1K+ pcsrail
    of
    95
    LM2903MX/NOPB

    LM2903MX

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2650
    AVNET-EMWorldwide12500
    BRITESTONESouth Korea477
    DIGI-KEYWorldwide5168
    FARNELLEurope and Asia748
    MOUSERWorldwide4544
    NEWARKAmericas748
    RSL MICROAsia Pacific10000
    TAYLORAmericas23205
    TECHMOSAAsia Pacific5000
    		$0.25 each at 1K+ pcsreel
    of
    2500
    LM2903N/NOPB

    LM2903N

    RoHS Status

    MDIP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide38
    AVNET-EMWorldwide3718
    DIGI-KEYWorldwide721
    FARNELLEurope and Asia2258
    MOUSERWorldwide2220
    NEWARKAmericas511
    RSL MICROAsia Pacific2000
    TAYLORAmericas2368
    		$0.33 each at 1K+ pcsrail
    of
    40

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM2903.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM2903 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM2903ITL/NOPB

    		2.808
    		MICRO SMD81260DetailDownloadN/A
    		XVC
    I 03
    LM2903ITLX/NOPB

    		2.808
    2.925
    		MICRO SMD81260DetailDownloadN/A
    		XVC
    I 03
    LM2903M/NOPB

    LM2903M
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    LM
    2903M
    LM2903MX/NOPB

    LM2903MX
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    LM
    2903M
    LM2903N/NOPB

    LM2903N
    		508.252
    510.002
    		MDIP81
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYTTE#
    LM
    2903N

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM2903.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM2903 is located at RoHS Status.

    Design Tools
    TitleSizeDate
    Amplifiers Selection Guide software for Windows  

    CAD Symbols and Models
    Download LM2903 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM2903ITLSLM04404600353250011002356520
    LM2903ITLXSLM04404600353250011002356520
    LM2903MSLM04404600353250011002356520
    LM2903MXSLM04404600353250011002356520
    LM2903NSLM04404600353250011002356520

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM2903.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM2903 is located at RoHS Status.

    [Information as of 9-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation