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



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

Typical Application
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Connection Diagram
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Typical Performance
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Paramaters / 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 2.5 V, 4.096 V, 2.048 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 0.33 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
PowerWiseYes Yes Yes

Datasheet
TitleSizeDateOther
Language
LM4140 High Precision Low Noise Low Dropout Voltage Reference881
Kbytes		7-Apr-05 


Featured 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


More Application Notes
TitleSizeDateOther
Language
AN-1932: Application Note 1932 LMP2021MAEVAL - Bridge Sensor Instrumentation Amplifier Evaluation Board User Guide176
Kbytes		10-Dec-08 

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

RoHS



SOIC NARROW		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
ARROWWorldwide75
AVNET-EMWorldwide8
DIGIKEYWorldwide312
FARNELLEurope and Asia111
FUTUREWorldwide5
NEWARKAmericas840
RS COMPONENTSWorldwide10
$2.41 each at 1K+ pcsrail
of
95
LM4140ACM-1.2/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide90
AVNET-EMWorldwide11
DIGIKEYWorldwide190
FARNELLEurope and Asia124
FUTUREWorldwide82
NEWARKAmericas25
RS COMPONENTSWorldwide79
$2.41 each at 1K+ pcsrail
of
95
LM4140ACM-2.0/NOPB
LM4140ACM-2.0

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
ARROWWorldwide116
AVNET-EMWorldwide155
DIGIKEYWorldwide328
FARNELLEurope and Asia108
FUTUREWorldwide190
RS COMPONENTSWorldwide8
$2.41 each at 1K+ pcsrail
of
95
LM4140ACM-2.5/NOPB
LM4140ACM-2.5

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide435
AVNET-EMWorldwide190
DIGIKEYWorldwide17
FARNELLEurope and Asia118
FUTUREWorldwide190
NEWARKAmericas42
RS COMPONENTSWorldwide59
$2.41 each at 1K+ pcsrail
of
95
LM4140ACM-4.1/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide0
RS COMPONENTSWorldwide10
$2.41 each at 1K+ pcsrail
of
95
LM4140BCM-1.0/NOPB
LM4140BCM-1.0

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide65
DIGIKEYWorldwide179
FARNELLEurope and Asia318
FUTUREWorldwide190
NEWARKAmericas46
RS COMPONENTSWorldwide88
$2.06 each at 1K+ pcsrail
of
95
LM4140BCM-1.2/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide140
DIGIKEYWorldwide222
FARNELLEurope and Asia45
FUTUREWorldwide198
RS COMPONENTSWorldwide22
$2.06 each at 1K+ pcsrail
of
95
LM4140BCM-2.0/NOPB
LM4140BCM-2.0

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide53
FARNELLEurope and Asia42
RS COMPONENTSWorldwide79
$2.06 each at 1K+ pcsrail
of
95
LM4140BCM-2.5/NOPB
LM4140BCM-2.5

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide299
DIGIKEYWorldwide0
FARNELLEurope and Asia267
NEWARKAmericas55
RS COMPONENTSWorldwide25
$2.06 each at 1K+ pcsrail
of
95
LM4140BCM-4.1/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide189
FARNELLEurope and Asia346
RS COMPONENTSWorldwide72
$2.06 each at 1K+ pcsrail
of
95
LM4140CCM-1.0/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
AVNET-EMWorldwide187
DIGIKEYWorldwide15
FARNELLEurope and Asia230
FUTUREWorldwide58
NEWARKAmericas18
RS COMPONENTSWorldwide71
$1.91 each at 1K+ pcsrail
of
95
LM4140CCM-1.2/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide262
FARNELLEurope and Asia232
NEWARKAmericas286
RS COMPONENTSWorldwide23
$1.91 each at 1K+ pcsrail
of
95
LM4140CCM-2.0/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide129
FARNELLEurope and Asia296
NEWARKAmericas85
RS COMPONENTSWorldwide23
$1.91 each at 1K+ pcsrail
of
95
LM4140CCM-2.5/NOPB
LM4140CCM-2.5

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide20
AVNET-EMWorldwide70
DIGIKEYWorldwide658
FARNELLEurope and Asia419
FUTUREWorldwide665
NEWARKAmericas2
RS COMPONENTSWorldwide79
$1.91 each at 1K+ pcsrail
of
95
LM4140CCM-4.1/NOPB
LM4140CCM-4.1

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide150
DIGIKEYWorldwide531
FARNELLEurope and Asia350
FUTUREWorldwide95
NEWARKAmericas57
RS COMPONENTSWorldwide52
$1.91 each at 1K+ pcsrail
of
95
LM4140ACMX-2.5/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.41 each at 1K+ pcsreel
of
2500
LM4140ACMX-4.1/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.41 each at 1K+ pcsreel
of
2500
LM4140BCMX-1.0/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.06 each at 1K+ pcsreel
of
2500
LM4140BCMX-2.5/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
ARROWWorldwide2500
DIGIKEYWorldwide0
$2.06 each at 1K+ pcsreel
of
2500
LM4140BCMX-4.1/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.06 each at 1K+ pcsreel
of
2500
LM4140CCMX-1.0/NOPB
LM4140CCMX-1.0

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.91 each at 1K+ pcsreel
of
2500
LM4140CCMX-1.2/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.91 each at 1K+ pcsreel
of
2500
LM4140CCMX-2.5/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.91 each at 1K+ pcsreel
of
2500
LM4140CCMX-4.1/NOPB

RoHS



SOIC NARROW		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.91 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

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LM4140ACM-1.0/NOPB
LM4140ACM-1.0
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140A
CM1.0
LM4140ACM-1.2/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140A
CM1.2
LM4140ACM-2.0/NOPB
LM4140ACM-2.0
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140A
CM2.0
LM4140ACM-2.5/NOPB
LM4140ACM-2.5
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140A
CM2.5
LM4140ACM-4.1/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140A
CM4.1
LM4140BCM-1.0/NOPB
LM4140BCM-1.0
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140B
CM1.0
LM4140BCM-1.2/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140B
CM1.2
LM4140BCM-2.0/NOPB
LM4140BCM-2.0
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140B
CM2.0
LM4140BCM-2.5/NOPB
LM4140BCM-2.5
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140B
CM2.5
LM4140BCM-4.1/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140B
CM4.1
LM4140CCM-1.0/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140C
CM1.0
LM4140CCM-1.2/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140C
CM1.2
LM4140CCM-2.0/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140C
CM2.0
LM4140CCM-2.5/NOPB
LM4140CCM-2.5
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140C
CM2.5
LM4140CCM-4.1/NOPB
LM4140CCM-4.1
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140C
CM4.1
LM4140ACMX-2.5/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140A
CM2.5
LM4140ACMX-4.1/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140A
CM4.1
LM4140BCMX-1.0/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140B
CM1.0
LM4140BCMX-2.5/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140B
CM2.5
LM4140BCMX-4.1/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140B
CM4.1
LM4140CCMX-1.0/NOPB
LM4140CCMX-1.0
SOIC NARROW81
1		260
235		RoHSDownloadN/A
NSZXTT
4140C
CM1.0
LM4140CCMX-1.2/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140C
CM1.2
LM4140CCMX-2.5/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140C
CM2.5
LM4140CCMX-4.1/NOPB
SOIC NARROW81260RoHSDownloadN/A
NSZXTT
4140C
CM4.1

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM4140ACM-1.0LFAST10195100026050002739175862
LM4140ACM-1.2LFAST10195100026050002739175862
LM4140ACM-2.0LFAST10195100026050002739175862
LM4140ACM-2.5LFAST10195100026050002739175862
LM4140ACM-4.1LFAST10195100026050002739175862
LM4140ACMX-2.5LFAST10195100026050002739175862
LM4140ACMX-4.1LFAST10195100026050002739175862
LM4140BCM-1.0LFAST10195100026050002739175862
LM4140BCM-1.2LFAST10195100026050002739175862
LM4140BCM-2.0LFAST10195100026050002739175862
LM4140BCM-2.5LFAST10195100026050002739175862
LM4140BCM-4.1LFAST10195100026050002739175862
LM4140BCMX-1.0LFAST10195100026050002739175862
LM4140BCMX-2.5LFAST10195100026050002739175862
LM4140BCMX-4.1LFAST10195100026050002739175862
LM4140CCM-1.0LFAST10195100026050002739175862
LM4140CCM-1.2LFAST10195100026050002739175862
LM4140CCM-2.0LFAST10195100026050002739175862
LM4140CCM-2.5LFAST10195100026050002739175862
LM4140CCM-4.1LFAST10195100026050002739175862
LM4140CCMX-1.0LFAST10195100026050002739175862
LM4140CCMX-1.2LFAST10195100026050002739175862
LM4140CCMX-2.5LFAST10195100026050002739175862
LM4140CCMX-4.1LFAST10195100026050002739175862

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.


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

Data Acquisition In Factory Automation
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Motor Control Sensing in Factory Automation
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Sensing Solutions In Factory Automation
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Data Acquisition In Factory Automation
Date: 8/24/2009
Length: 0:31:29

Motor Control Sensing in Factory Automation
Date: 8/4/2009
Length: 0:24:21

Sensing Solutions In Factory Automation
Date: 7/10/2009
Length: 0:50:00

[Information as of 20-Nov-2009]