LM4140

現行

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

產品詳細資料

VO (V) 1.024, 1.25, 2.048, 2.5, 4.096 Initial accuracy (max) (%) 0.1 Temp coeff (max) (ppm/°C) 3, 6, 10 Vin (min) (V) 1.8 Vin (max) (V) 5.5 Iq (typ) (mA) 0.23, 0.265 Rating Catalog Features Enable pin LFN 0.1 to 10 Hz (typ) (µVPP) 2.2 Iout/Iz (max) (mA) 8 Operating temperature range (°C) 0 to 70 Shutdown current (ISD) (typ) (µA) 0.1
VO (V) 1.024, 1.25, 2.048, 2.5, 4.096 Initial accuracy (max) (%) 0.1 Temp coeff (max) (ppm/°C) 3, 6, 10 Vin (min) (V) 1.8 Vin (max) (V) 5.5 Iq (typ) (mA) 0.23, 0.265 Rating Catalog Features Enable pin LFN 0.1 to 10 Hz (typ) (µVPP) 2.2 Iout/Iz (max) (mA) 8 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.

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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REF5025 現行 2.5V、3µVpp/V 雜訊、3ppm/°C 漂移精密串聯電壓參考 Enhanced initial accuracy (0.05%) and wider temperature range
REF5040 現行 4.096-V、3-µVpp/V 雜訊、3-ppm/°C 漂移精密串聯電壓參考 Improved long-term drift
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.
功能與所比較的裝置相似
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* Data sheet LM4140 High Precision Low Noise Low Dropout Voltage Reference datasheet (Rev. F) PDF | HTML 2016年 9月 16日

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