LM4140 精密微功耗低压降电压基准 | 德州仪器 TI.com.cn

LM4140
此产品已上市,且可供购买。 可提供某些产品的较新替代品。
精密微功耗低压降电压基准

精密微功耗低压降电压基准 - LM4140
数据表
 

备选器件推荐

  • LM4050-N  -  Shunt Reference
  • LM4050-N-Q1  -  Shunt Reference
  • REF5025  - 器件与被比较器件具有相似功能,但并不功能等效。   Wider temp and voltage range, better accuracy
  • REF3425  - 器件与被比较器件具有相似功能,但并不功能等效。   Wider temp range, lower Iq

描述

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.

特性

  • 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

参数

与其它产品相比 串联电压基准 邮件 下载到电子表格中
Part number 立即下单 VO (V) Initial accuracy (Max) (%) Temp coeff (Max) (ppm/ degree C) Rating Operating temperature range (C) Iout/Iz (Max) (mA) Iq (Typ) (uA) Shutdown current (Typ) (uA) Iq (Max) (uA) Features Package Group Vin (Min) (V) Vin (Max) (V)
LM4140 立即下单 1.024
1.25
2.048
2.5
4.096    
0.1     3
6
10    
Catalog     0 to 70     8     230
265    
0.1     320
375
350
400    
Enable pin     SOIC | 8     1.8     5.5