National Semiconductor | High-performance Analog

 

 LM4140   
Precision Micropower Low Dropout Voltage Reference from the PowerWise® Family		 Click link to Download

Features
  • High initial accuracy: 0.1%
  • Ultra low noise
  • Low Temperature Coefficient: 3 ppm/°C (A grade)
  • Low voltage operation: 1.8V
  • SO-8 package
  • Low dropout voltage: 20 mV (typ) @ 1mA
  • Supply Current: 230 µA (typ), <= 1 µA disable mode
  • Enable pin
  • Output voltage options: 1.024V, 1.250V, 2.048V, 2.500V, and 4.096V
  • Custom voltages from 0.5V to 4.5V
  • Temperature range (0°C to 70°C)

    • Description

    The LM4140 series of precision references are designed to combine high accuracy, low drift and noise with low power dissipation in a small package.

    The LM4140 is the industry's first reference with output voltage options lower than the bandgap voltage.

    The key to the advance performance of the LM4140 is the use of EEPROM registers and CMOS DACs for temperature coefficient curvature correction and trimming of the output voltage accuracy of the device during the final production testing.

    The major advantage of this method is the much higher resolution available with DACs than is available economically with most methods utilized by other bandgap references.

    The low input and dropout voltage, low supply current and output drive capability of the LM4140 makes this product an ideal choice for battery powered and portable applications.

    The LM4140 is available in three grades (A, B, C) with 0.1% initial accuracy and 3, 6 and 10 ppm/°C temperature coefficients. For even lower Tempco, contact National Semiconductor.

    The device performance is specified over the temperature range (0°C to +70°C) and is available in compact 8-pin SO package.

    For other output voltage options from 0.5V to 4.5V, contact National Semiconductor.


    Applications

  • Portable, battery powered equipment
  • Instrumentation and test equipment
  • Automotive
  • Industrial process control
  • Data acquisition systems
  • Medical equipment
  • Precision scales
  • Servo systems
  • Battery charging

    • Also Recommended
    LM4050Shunt Reference
    LM4120▲Low Noise Reference
    LM4132▲SOT-23 Precision Series Reference



    Typical Application
    click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    click for larger image


    Parameters / ValuesLM4140 LM4120 LM4132
    Initial Accuracy (+/-) Max0.1 % 0.2, 0.5 % 0.2, 0.4, 0.1, 0.05, 0.5 %
    Reference Voltage2.5 V, 1.25 V, 4.096 V, 2.048 V, 1.024 V 1.8 V, 2.5 V, 5 V, 3 V, 4.096 V, 2.048 V, 3.3 V 1.8 V, 2.5 V, 4.096 V, 2.048 V, 3.3 V, 3.0 V
    Tempco, max (ppm/C)6, 3, 10 ppm 50 ppm 30, 20, 10 ppm
    Input Min Voltage1.8, 2.283, 2.735, 4.366 Volt 3.3 Volt 2.2 Volt
    Input Max Voltage5.5 Volt 14 Volt 5.5 Volt
    Dropout Voltage0.195, 0.16 Volt 0.18 Volt 0.175 Volt
    Quiescent Current0.23 mA 0.16 mA 0.06 mA
    Output Current8 mA 5 mA 20 mA
    Voltage Noise (rms)2.2 uV 36 uV 170 uV
    Long Term Stability (ppm/1000hr)60 ppm 100 ppm 50 ppm
    Temperature Min0 deg C -40 deg C -40 deg C
    Temperature Max70 deg C 85 deg C 125 deg C
    AutomotiveNo No No
    PowerWiseYes Yes Yes

    Datasheets
    TitleSizeDateOther
    Language
    LM4140 Precision Micropower Low Dropout Voltage Reference881
    Kbytes    		7-Apr-05   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1357: Application Note 1357 LM2744 Evaluation Board1794
    Kbytes    		5-Oct-05 中文
    AN-1559: Application Note 1559 Practical RTD Interface Solutions215
    Kbytes    		10-Oct-07日本語
    中文
    AN-1852: Application Note 1852 Designing With pH Electrodes190
    Kbytes    		25-Sep-08 


    Other Technical Documents
    TitleTypeDate
    Improving Machinery Vibration AnalysisSignal Path Designer 2006-07-07
    A precision interface for a Resistance Temperature Detector (RTD)Technology Edge 2004-12-01

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM4140ACM-1.0/NOPB

    LM4140ACM-1.0

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide92
    DIGI-KEYWorldwide110
    MOUSERWorldwide453
    NEWARKAmericas208
    RS COMPONENTSWorldwide10
    TAYLORAmericas92
    		$2.14 each at 1K+ pcsrail
    of
    95
    LM4140ACM-1.2/NOPB

    LM4140ACM-1.2

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide185
    AVNET-EMWorldwide185
    DIGI-KEYWorldwide190
    MOUSERWorldwide121
    NEWARKAmericas83
    RS COMPONENTSWorldwide79
    TAYLORAmericas185
    		$2.14 each at 1K+ pcsrail
    of
    95
    LM4140ACM-2.0/NOPB

    LM4140ACM-2.0

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide176
    DIGI-KEYWorldwide0
    MOUSERWorldwide190
    RS COMPONENTSWorldwide8
    		$2.14 each at 1K+ pcsrail
    of
    95
    LM4140ACM-2.5/NOPB

    LM4140ACM-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide25
    MOUSERWorldwide117
    NEWARKAmericas69
    RS COMPONENTSWorldwide59
    		$2.14 each at 1K+ pcsrail
    of
    95
    LM4140ACM-4.1/NOPB

    LM4140ACM-4.1

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide190
    DIGI-KEYWorldwide201
    MOUSERWorldwide387
    RS COMPONENTSWorldwide10
    		$2.14 each at 1K+ pcsrail
    of
    95
    LM4140ACMX-2.5/NOPB

    LM4140ACMX-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$2.14 each at 1K+ pcsreel
    of
    2500
    LM4140ACMX-4.1/NOPB

    LM4140ACMX-4.1

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$2.14 each at 1K+ pcsreel
    of
    2500
    LM4140BCM-1.0/NOPB

    LM4140BCM-1.0

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    RS COMPONENTSWorldwide88
    		$1.99 each at 1K+ pcsrail
    of
    95
    LM4140BCM-1.2/NOPB

    LM4140BCM-1.2

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide213
    AVNET-EMWorldwide123
    DIGI-KEYWorldwide138
    MOUSERWorldwide190
    RS COMPONENTSWorldwide22
    TAYLORAmericas213
    		$1.99 each at 1K+ pcsrail
    of
    95
    LM4140BCM-2.0/NOPB

    LM4140BCM-2.0

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide274
    AVNET-EMWorldwide190
    DIGI-KEYWorldwide146
    MOUSERWorldwide187
    RS COMPONENTSWorldwide79
    TAYLORAmericas274
    		$1.99 each at 1K+ pcsrail
    of
    95
    LM4140BCM-2.5/NOPB

    LM4140BCM-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide208
    AVNET-EMWorldwide52
    DIGI-KEYWorldwide71
    MOUSERWorldwide190
    NEWARKAmericas191
    RS COMPONENTSWorldwide25
    TAYLORAmericas208
    		$1.99 each at 1K+ pcsrail
    of
    95
    LM4140BCM-4.1/NOPB

    LM4140BCM-4.1

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide826
    AVNET-EMWorldwide280
    DIGI-KEYWorldwide188
    MOUSERWorldwide187
    NEWARKAmericas210
    RS COMPONENTSWorldwide72
    TAYLORAmericas826
    		$1.99 each at 1K+ pcsrail
    of
    95
    LM4140BCMX-1.0/NOPB

    LM4140BCMX-1.0

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.99 each at 1K+ pcsreel
    of
    2500
    LM4140BCMX-2.5/NOPB

    LM4140BCMX-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.99 each at 1K+ pcsreel
    of
    2500
    LM4140BCMX-4.1/NOPB

    LM4140BCMX-4.1

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.99 each at 1K+ pcsreel
    of
    2500
    LM4140CCM-1.0/NOPB

    LM4140CCM-1.0

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide365
    AVNET-EMWorldwide204
    DIGI-KEYWorldwide43
    MOUSERWorldwide74
    NEWARKAmericas248
    RS COMPONENTSWorldwide71
    TAYLORAmericas365
    		$1.80 each at 1K+ pcsrail
    of
    95
    LM4140CCM-1.2/NOPB

    LM4140CCM-1.2

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide90
    DIGI-KEYWorldwide514
    MOUSERWorldwide118
    NEWARKAmericas139
    RS COMPONENTSWorldwide23
    		$1.80 each at 1K+ pcsrail
    of
    95
    LM4140CCM-2.0/NOPB

    LM4140CCM-2.0

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide485
    AVNET-EMWorldwide180
    DIGI-KEYWorldwide78
    MOUSERWorldwide15
    NEWARKAmericas85
    RS COMPONENTSWorldwide23
    TAYLORAmericas485
    		$1.80 each at 1K+ pcsrail
    of
    95
    LM4140CCM-2.5/NOPB

    LM4140CCM-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide500
    AVNET-EMWorldwide242
    DIGI-KEYWorldwide0
    MOUSERWorldwide3054
    NEWARKAmericas214
    RS COMPONENTSWorldwide79
    TAYLORAmericas1314
    		$1.80 each at 1K+ pcsrail
    of
    95
    LM4140CCM-4.1/NOPB

    LM4140CCM-4.1

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide53
    AVNET-EMWorldwide65
    DIGI-KEYWorldwide307
    MOUSERWorldwide124
    NEWARKAmericas166
    RS COMPONENTSWorldwide52
    TAYLORAmericas53
    		$1.80 each at 1K+ pcsrail
    of
    95
    LM4140CCMX-1.0/NOPB

    LM4140CCMX-1.0

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2500
    DIGI-KEYWorldwide0
    TAYLORAmericas2500
    		$1.80 each at 1K+ pcsreel
    of
    2500
    LM4140CCMX-1.2/NOPB

    LM4140CCMX-1.2

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.80 each at 1K+ pcsreel
    of
    2500
    LM4140CCMX-2.5/NOPB

    LM4140CCMX-2.5

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.80 each at 1K+ pcsreel
    of
    2500
    LM4140CCMX-4.1/NOPB

    LM4140CCMX-4.1

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.80 each at 1K+ pcsreel
    of
    2500

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM4140CCMX-2.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008

    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 LM4140.

    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 LM4140 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM4140ACM-1.0/NOPB

    LM4140ACM-1.0
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140A
    CM1.0
    LM4140ACM-1.2/NOPB

    LM4140ACM-1.2
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140A
    CM1.2
    LM4140ACM-2.0/NOPB

    LM4140ACM-2.0
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140A
    CM2.0
    LM4140ACM-2.5/NOPB

    LM4140ACM-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140A
    CM2.5
    LM4140ACM-4.1/NOPB

    LM4140ACM-4.1
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140A
    CM4.1
    LM4140ACMX-2.5/NOPB

    LM4140ACMX-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140A
    CM2.5
    LM4140ACMX-4.1/NOPB

    LM4140ACMX-4.1
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140A
    CM4.1
    LM4140BCM-1.0/NOPB

    LM4140BCM-1.0
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140B
    CM1.0
    LM4140BCM-1.2/NOPB

    LM4140BCM-1.2
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140B
    CM1.2
    LM4140BCM-2.0/NOPB

    LM4140BCM-2.0
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140B
    CM2.0
    LM4140BCM-2.5/NOPB

    LM4140BCM-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140B
    CM2.5
    LM4140BCM-4.1/NOPB

    LM4140BCM-4.1
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140B
    CM4.1
    LM4140BCMX-1.0/NOPB

    LM4140BCMX-1.0
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140B
    CM1.0
    LM4140BCMX-2.5/NOPB

    LM4140BCMX-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140B
    CM2.5
    LM4140BCMX-4.1/NOPB

    LM4140BCMX-4.1
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140B
    CM4.1
    LM4140CCM-1.0/NOPB

    LM4140CCM-1.0
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM1.0
    LM4140CCM-1.2/NOPB

    LM4140CCM-1.2
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM1.2
    LM4140CCM-2.0/NOPB

    LM4140CCM-2.0
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM2.0
    LM4140CCM-2.5/NOPB

    LM4140CCM-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM2.5
    LM4140CCM-4.1/NOPB

    LM4140CCM-4.1
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM4.1
    LM4140CCMX-1.0/NOPB

    LM4140CCMX-1.0
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM1.0
    LM4140CCMX-1.2/NOPB

    LM4140CCMX-1.2
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM1.2
    LM4140CCMX-2.5/NOPB

    LM4140CCMX-2.5
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM2.5
    LM4140CCMX-4.1/NOPB

    LM4140CCMX-4.1
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailDownloadN/A
    		NSZXTT
    4140C
    CM4.1

    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 LM4140.

    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 LM4140 is located at RoHS Status.

    CAD Symbols and Models
    Download LM4140 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM4140ACM-1.0LFAST10201400027850002790251354
    LM4140ACM-1.2LFAST10201400027850002790251354
    LM4140ACM-2.0LFAST10201400027850002790251354
    LM4140ACM-2.5LFAST10201400027850002790251354
    LM4140ACM-4.1LFAST10201400027850002790251354
    LM4140ACMX-2.5LFAST10201400027850002790251354
    LM4140ACMX-4.1LFAST10201400027850002790251354
    LM4140BCM-1.0LFAST10201400027850002790251354
    LM4140BCM-1.2LFAST10201400027850002790251354
    LM4140BCM-2.0LFAST10201400027850002790251354
    LM4140BCM-2.5LFAST10201400027850002790251354
    LM4140BCM-4.1LFAST10201400027850002790251354
    LM4140BCMX-1.0LFAST10201400027850002790251354
    LM4140BCMX-2.5LFAST10201400027850002790251354
    LM4140BCMX-4.1LFAST10201400027850002790251354
    LM4140CCM-1.0LFAST10201400027850002790251354
    LM4140CCM-1.2LFAST10201400027850002790251354
    LM4140CCM-2.0LFAST10201400027850002790251354
    LM4140CCM-2.5LFAST10201400027850002790251354
    LM4140CCM-4.1LFAST10201400027850002790251354
    LM4140CCMX-1.0LFAST10201400027850002790251354
    LM4140CCMX-1.2LFAST10201400027850002790251354
    LM4140CCMX-2.5LFAST10201400027850002790251354
    LM4140CCMX-4.1LFAST10201400027850002790251354

    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 LM4140.

    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 LM4140 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM4140CCMX-2.0
    		NONE
    		NATIONAL SEMICONDUCTOR
    		16 Nov 2008

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    Length: 00:42:56
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    Length: 0:24:21
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    Length: 0:31:29
    Weigh an Eyelash--Build a Microgram Scale with Precision Amps
    Date: 2010-03-02
    Length: 0:03:16
    Factory Automation Overview
    Date: 2009-08-04
    Length: 0:32:30
    Sensing Solutions In Factory Automation
    Date: 2009-07-10
    Length: 0:50:00
    [Information as of 7-Feb-2012]
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