LM4140BCM-4.1 ,Precision Micropower Low Dropout Voltage ReferenceApplications Summaryoutput drive capability of the LM4140 makes this product ann Portable, battery ..
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LM4140BCMX-2.5 ,Precision Micropower Low Dropout Voltage ReferenceApplications Summaryoutput drive capability of the LM4140 makes this product ann Portable, battery ..
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LP2951ACMX ,Series of Adjustable Micropower Voltage RegulatorsMICROCIRCUIT DATA SHEETOriginal Creation Date: 08/01/95MNLP2951-X REV 1B1Last Update Date: 05/19/98 ..
LP2951ACMX/NOPB ,Series of Adjustable Micropower Voltage Regulators 8-SOIC -40 to 125Block Diagrams. 16Information..... 348.3 Feature Description.... 174 Revision HistoryNOTE: Page num ..
LP2951ACMX-3.0 ,Series of Adjustable Micropower Voltage RegulatorsLP2950/LP2951 Series of Adjustable Micropower Voltage RegulatorsNovember 2004LP2950/LP2951Series of ..
LM4140ACM-1.0-LM4140ACM-1.2-LM4140ACM2.0-LM4140ACM-2.0-LM4140ACM-2.5-LM4140ACM-4.1-LM4140ACMX-1.0-LM4140ACMX-1.2-LM4140BCM 1.0-LM4140BCM 4.1-LM4140BCM1.0-LM4140BCM-1.0-LM4140BCM1.2-LM4140BCM-1.2-LM4140BCM2.0-LM4140BCM-2.0-LM4140BCM-2.5-LM4140BCM-4.1-LM4140BCMX-1.0-LM
Precision Micropower Low Dropout Voltage Reference
LM4140
High Precision Low Noise Low Dropout Voltage
Reference
General DescriptionThe LM4140 seriesof precision references are designedto
combine high accuracy, low drift and noise with low power
dissipationina small package.
The LM4140isthe industry’s first reference with output volt-
age options lower thanthe bandgap voltage.
The keytothe advance performanceofthe LM4140is the
useof EEPROM registers and CMOS DACsfor temperature
coefficient curvature correction and trimmingof the output
voltage accuracyof the device during the final production
testing.
The major advantageof this methodisthe much higher reso-
lution available with DACs thanis available economically
with most methods utilizedby other bandgap references.
The low input and dropout voltage, low supply current and
output drive capabilityofthe LM4140 makes this productan
ideal choicefor battery powered and portable applications.
The LM4140is availablein three grades(A,B,C) with 0.1%
initial accuracy and3,6 and10 ppm/˚C temperature coeffi-
cients. For even lower Tempco, contact National Semicon-
ductor.
The device performanceis specified over the temperature
range (0˚Cto +70˚C) andis availablein compact 8-pin SO
package.
For other output voltage options from 0.5Vto 4.5V, con-
tact National Semiconductor.
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: 230μA (typ),≤1μA disable mode Enablepin Output voltage options: 1.024V, 1.250V, 2.048V, 2.500V,
and 4.096V Custom voltages from 0.5Vto 4.5V Temperature range (0˚Cto 70˚C)
Applications Summary Portable, battery powered equipment Instrumentation and test equipment Automotive Industrial process control Data acquisition systems Medical equipment Precision scales Servo systems Battery charging
Typical ApplicationDS101079-1
COUT, Output bypass capacitor.Seetextfor selection detail.
Typical Temperature Coefficient
(Sampleof5 Parts)DS101079-23
Refertothe Ordering Information Tableinthis Data Sheetfor Specific PartNumber
July 2000
LM4140
High
Precision
Low
Noise
Low
Dropout
oltage
Reference
