产品详细信息

VO (V) 1.024, 1.25, 2.048, 2.5, 4.096 Initial accuracy (Max) (%) 0.1 Temp coeff (Max) (ppm/ degree C) 3, 6, 10 Vin (Min) (V) 1.8 Vin (Max) (V) 5.5 Iq (Typ) (uA) 230, 265 Rating Catalog Features Enable pin Iout/Iz (Max) (mA) 8 Operating temperature range (C) 0 to 70 Shutdown current (ISD) (Typ) (uA) 0.1
VO (V) 1.024, 1.25, 2.048, 2.5, 4.096 Initial accuracy (Max) (%) 0.1 Temp coeff (Max) (ppm/ degree C) 3, 6, 10 Vin (Min) (V) 1.8 Vin (Max) (V) 5.5 Iq (Typ) (uA) 230, 265 Rating Catalog Features Enable pin Iout/Iz (Max) (mA) 8 Operating temperature range (C) 0 to 70 Shutdown current (ISD) (Typ) (uA) 0.1
SOIC (D) 8 19 mm² 4.9 x 3.9
  • 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
  • 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

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.

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.

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类型 项目标题 下载最新的英语版本 日期
* 数据表 LM4140 High Precision Low Noise Low Dropout Voltage Reference 数据表 (Rev. F) 16 Sep 2016
白皮书 Voltage Reference Selection Basics White Paper (Rev. A) 23 Oct 2018
技术文章 Find the "Goldilocks" voltage reference for your application 02 Sep 2016
更多文献资料 How to Select the Right Voltage Reference (Rev. A) 30 Jun 2015
应用手册 AN-1559 Practical RTD Interface Solutions (Rev. B) 01 May 2013
应用手册 AN-1852 Designing With pH Electrodes (Rev. A) 01 May 2013
应用手册 Application Note 1559 Practical RTD Interface Solutions (cn) 10 Oct 2007
应用手册 Improving Machinery Vibration Analysis 07 Jul 2006
白皮书 A precision interface for a Resistance Temperature Detector (RTD) 01 Dec 2004

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DIP-ADAPTER-EVM — DIP 适配器评估模块

借助 DIP-Adapter-EVM 加快运算放大器的原型设计和测试,该 EVM 有助于快速轻松地连接小型表面贴装 IC 并且价格低廉。您可以使用随附的 Samtec 端子板连接任何受支持的运算放大器,或者将这些端子板直接连接至现有电路。

DIP-Adapter-EVM 套件支持六种常用的业界通用封装,包括:

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参考设计

TIDA-00499 — 采用差分放大器和 HS ADC 的瞬态数字故障记录器 AFE 参考设计

数字故障录波器 (DFR) 能够在 60/50Hz 下检测 17/20μs 的瞬态,而瞬态记录仪能够捕捉可在一微秒内达到峰值和衰减的干扰。该参考设计展示了对瞬态输入的捕捉,其中 DFR 最高可支持 1MHz 的频率,瞬变录波器最高可支持 25MHz 的频率。无论是正瞬态还是负瞬态(<=2kV 峰值),都可使用差分放大器驱动高速转换器,根据应用需求以不同的分辨率(12 位到 14 位分辨率)进行捕捉,并且精度在 10% 以内。
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  • MTBF/时基故障估算
  • 材料成分
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