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LM4140ACM-2.5/NOPB 产品设计参考手册 - TI（德州仪器）
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TI（德州仪器）
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电压基准芯片
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SOIC-8
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串联电压参考，固定，2.5V 至 3.3V### 电压参考，Texas Instruments精密固定和可调电压参考 IC 利用串联、并联或串联/并联拓扑，并提供通孔和表面安装封装。 电压参考的初始准确度为 ±0.02 至 ±2%。
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LM4140ACM-2.5/NOPB数据手册
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LM4140
www.ti.com
SNVS053E –JUNE 2000–REVISED APRIL 2013
LM4140 High Precision Low Noise Low Dropout Voltage Reference
Check for Samples: LM4140
1
FEATURES
DESCRIPTION
2
• 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.
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.
2All 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.
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