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LM4140 Datasheet

High Precision Low Noise Low Dropout Voltage Reference

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LM4140
SNVS053F – JUNE 2000 – REVISED SEPTEMBER 2016
LM4140 High Precision Low Noise Low Dropout Voltage Reference
1 Features
1 High Initial Accuracy: 0.1%
• Ultra-Low Noise
• Low Temperature Coefficient: 3 ppm/°C (A Grade)
• Low Voltage Operation: 1.8V
• Low Dropout Voltage: 20 mV (Typical) at 1mA
• Supply Current: 230 µA (Typical), 1 µA Disable
Mode
• Enable Pin
• Output Voltage Options: 1.024 V, 1.25 V, 2.048 V,
2.5 V, and 4.096 V
• Custom Voltages From 0.5 V to 4.5 V
• Temperature Range: 0°C to 70°C
2 Applications
• Portable, Battery-Powered Equipment
• Instrumentation and Test Equipment
• Automotive
• Industrial Process Control
• Data Acquisition Systems
• Medical Equipment
• Precision Scales
• Servo Systems
• Battery Charging
3 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 used 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 temperature
coefficients, contact Texas Instruments.
The device performance is specified over the
temperature range 0°C to 70°C, and is available in
compact 8-pin package.
For other output voltage options from 0.5 V to 4.5 V,
contact Texas Instruments.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM4140
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
Input 2
VIN
6
VREF
5
NC
Output
COUT
1 F
3
Enable
GND
1, 4 7, 8
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

LM4140 Datasheet Preview

LM4140 Datasheet

High Precision Low Noise Low Dropout Voltage Reference

No Preview Available !

LM4140
SNVS053F – JUNE 2000 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 6
7 Detailed Description ............................................ 10
7.1 Overview ................................................................. 10
7.2 Functional Block Diagram ....................................... 10
7.3 Feature Description................................................. 10
7.4 Device Functional Modes........................................ 10
8 Application and Implementation ........................ 11
8.1 Application Information............................................ 11
8.2 Typical Applications ................................................ 14
9 Power Supply Recommendations...................... 20
10 Layout................................................................... 20
10.1 Layout Guidelines ................................................. 20
10.2 Layout Example .................................................... 20
11 Device and Documentation Support ................. 21
11.1 Receiving Notification of Documentation Updates 21
11.2 Community Resources.......................................... 21
11.3 Trademarks ........................................................... 21
11.4 Electrostatic Discharge Caution ............................ 21
11.5 Glossary ................................................................ 21
12 Mechanical, Packaging, and Orderable
Information ........................................................... 21
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (April 2013) to Revision F
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
• Added Thermal Information table ........................................................................................................................................... 4
Changes from Revision D (April 2005) to Revision E
Page
• Changed layout of National Semiconductor Data Sheet to TI format .................................................................................... 1
2
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Product Folder Links: LM4140
Copyright © 2000–2016, Texas Instruments Incorporated



Part Number LM4140
Description High Precision Low Noise Low Dropout Voltage Reference
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