LM4140

不推薦在新設計中採用

具觸發針腳的 0.1% 3-ppm/°C 精密微功率低降壓串聯電壓參考

立即訂購

產品規格表

document-pdfAcrobat LM4140 High Precision Low Noise Low Dropout Voltage Reference datasheet (Rev. F) (英文) PDF | HTML

LM4140 不建議用於新設計

此產品將繼續向現有客戶提供。新設計應考量替代產品。

open-in-new

比較替代產品

功能相同，但引腳輸出與所比較的裝置不同

REF35

現行

650-nA 靜態電流、12-ppm/°C 漂移、超低功率精密電壓參考 Improved quiescent current, noise and other parameters

REF70

現行

具有低雜訊和低偏移的超高精度電壓參考 Improved noise, temperature drift, and long term drift.

LM4140

不推薦在新設計中採用

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

VO (V)

1.024, 1.25, 2.048, 2.5, 4.096

Temp coeff (max) (ppm/°C)

3, 6, 10

Initial accuracy (max) (%)

0.1

Features

Enable pin

Iout/Iz (max) (mA)

8

Vin (min) (V)

1.8

Vin (max) (V)

5.5

Iq (typ) (mA)

0.23, 0.265, 230, 265

LFN 0.1 to 10 Hz (typ) (µVPP)

2.2

Operating temperature range (°C)

0 to 70

Shutdown current (ISD) (typ) (µA)

0.1

Rating

Catalog

VO (V)

1.024, 1.25, 2.048, 2.5, 4.096

Temp coeff (max) (ppm/°C)

3, 6, 10

Initial accuracy (max) (%)

0.1

Features

Enable pin

Iout/Iz (max) (mA)

8

Vin (min) (V)

1.8

Vin (max) (V)

5.5

Iq (typ) (mA)

0.23, 0.265, 230, 265

LFN 0.1 to 10 Hz (typ) (µVPP)

2.2

Operating temperature range (°C)

0 to 70

Shutdown current (ISD) (typ) (µA)

0.1

SOIC (D)

8

29.4 mm² 4.9 x 6

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.