LM4140

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SNVS053E – JUNE 2000 – REVISED APRIL 2013

LM4140 High Precision Low Noise Low Dropout Voltage Reference

Check for Samples: LM4140

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FEATURES

DESCRIPTION

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•

High Initial Accuracy: 0.1%

The LM4140 series of precision references are

•

Ultra Low Noise

designed to combine high accuracy, low drift and

•

Low Temperature Coefficient: 3 ppm/°C (A

noise with low power dissipation in a small package.

grade)

The LM4140 is the industry's first reference with

•

Low Voltage Operation: 1.8V

output voltage options lower than the bandgap

•

Low Dropout Voltage: 20 mV (typ) @ 1mA

voltage.

•

Supply Current: 230

μA (typ), ≤ 1 μA Disable

The key to the advance performance of the LM4140

Mode

is the use of EEPROM registers and CMOS DACs for

temperature

coefficient

curvature

correction

and

•

Enable Pin

trimming of the output voltage accuracy of the device

•

Output Voltage Options: 1.024V, 1.250V,

during the final production testing.

2.048V, 2.500V, and 4.096V

The major advantage of this method is the much

•

Custom Voltages from 0.5V to 4.5V

higher

resolution

available

with

DACs

than

is

•

Temperature Range (0°C to 70°C)

available economically with most methods utilized by

other bandgap references.

APPLICATIONS SUMMARY

The low input and dropout voltage, low supply current

•

Portable, Battery Powered Equipment

and output drive capability of the LM4140 makes this

•

Instrumentation and Test Equipment

product an ideal choice for battery powered and

portable applications.

•

Automotive

The LM4140 is available in three grades (A, B, C)

•

Industrial Process Control

with 0.1% initial accuracy and 3, 6 and 10 ppm/°C

•

Data Acquisition Systems

temperature coefficients. For even lower Tempco,

•

Medical Equipment

contact Texas Instruments.

•

Precision Scales

The

device

performance

is

specified

over

the

•

Servo Systems

temperature range (0°C to +70°C) and is available in

compact 8-pin package.

•

Battery Charging

For other output voltage options from 0.5V to

4.5V, contact Texas Instruments.

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2000–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.