LM4140_15 Datasheet, PDF (1/23 Pages) Texas Instruments – High Precision Low Noise Low Dropout Voltage Reference

LM4140
www.ti.com
SNVS053E – JUNE 2000 – REVISED APRIL 2013
LM4140 High Precision Low Noise Low Dropout Voltage Reference
Check for Samples: LM4140
FEATURES
1
•2 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 (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)
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
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 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 0.5V to
4.5V, contact Texas Instruments.
1
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2013, Texas Instruments Incorporated