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REF54

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0.8ppm/°C drift (max), 0.11ppmp-p 1/f noise, 380μA current precision voltage reference

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REF54

ACTIVE
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Product details

VO (V) 2.5 Initial accuracy (max) (%) 0.02 Temp coeff (max) (ppm/°C) 0.8 Vin (min) (V) 2.7 Vin (max) (V) 18 Iq (typ) (mA) 0.26 Rating Catalog Features Enable pin LFN 0.1 to 10 Hz (typ) (µVPP) 1.125 Iout/Iz (max) (mA) 10 Operating temperature range (°C) 0 to 70 Shutdown current (ISD) (typ) (µA) 5
VO (V) 2.5 Initial accuracy (max) (%) 0.02 Temp coeff (max) (ppm/°C) 0.8 Vin (min) (V) 2.7 Vin (max) (V) 18 Iq (typ) (mA) 0.26 Rating Catalog Features Enable pin LFN 0.1 to 10 Hz (typ) (µVPP) 1.125 Iout/Iz (max) (mA) 10 Operating temperature range (°C) 0 to 70 Shutdown current (ISD) (typ) (µA) 5
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Low temperature drift coefficient:
    • 0.8 ppm/°C maximum (C grade, 0°C to 70°C)
    • 1.5 ppm/°C maximum (Q grade, -40°C to 125°C)
  • Low noise (0.1 Hz to 10 Hz):
    • 0.11 ppmp-p with CNR = 100 µF
    • 0.45 ppmp-p with CNR = Open
  • High accuracy: ±0.02% maximum
  • Low quiescent current: 380 µA maximum
  • Low long-term stability (1k hr): 25 ppm
  • Designed for a wide range of applications:
    • Wide input voltage up to 18 V
    • Output current: ±10 mA
    • Voltage options: 2.5 V, 3 V, 4.096 V, 4.5 V, 5 V
  • Fit for all design requirement:
    • Stable with 1-µF to 100-µF output low-ESR capacitor
    • High PSRR: 100 dB at 1 kHz
    • Operating temperature range: −40°C to +125°C
    • Pin-to-pin to REF50xx family when TEMP pin is not used
  • Low temperature drift coefficient:
    • 0.8 ppm/°C maximum (C grade, 0°C to 70°C)
    • 1.5 ppm/°C maximum (Q grade, -40°C to 125°C)
  • Low noise (0.1 Hz to 10 Hz):
    • 0.11 ppmp-p with CNR = 100 µF
    • 0.45 ppmp-p with CNR = Open
  • High accuracy: ±0.02% maximum
  • Low quiescent current: 380 µA maximum
  • Low long-term stability (1k hr): 25 ppm
  • Designed for a wide range of applications:
    • Wide input voltage up to 18 V
    • Output current: ±10 mA
    • Voltage options: 2.5 V, 3 V, 4.096 V, 4.5 V, 5 V
  • Fit for all design requirement:
    • Stable with 1-µF to 100-µF output low-ESR capacitor
    • High PSRR: 100 dB at 1 kHz
    • Operating temperature range: −40°C to +125°C
    • Pin-to-pin to REF50xx family when TEMP pin is not used

The REF54 is a family of high precision, low-drift, low current consumption series voltage reference devices. The REF54 family offers low temperature drift coefficient (0.8 ppm/°C), low noise (0.11 ppmp-p) and high accuracy (±0.02%) while consuming 260 µA current. The REF54 with low long-term drift (25 ppm), excellent load and line regulation helps meet strict performance requirements of high precision applications. The device family is designed as a companion device for high-resolution data converters such as ADS8900B, ADS127L11, ADS1285 and DAC11001B.

The REF54 family supports wide supply voltage rating of 18 V. This also protects the device in case of power supply IC failure. The REF54 device supports up to 10 mA load current. The wide load current support allows for direct connection of REF54 as power supply to precision sensors.

The REF54 is specified for the two temperature ranges, C grade is specified for 0°C to 70°C and Q grade is specified for -40°C to +125°C . The wide temperature range enables operation across various industrial applications.

The REF54 is a family of high precision, low-drift, low current consumption series voltage reference devices. The REF54 family offers low temperature drift coefficient (0.8 ppm/°C), low noise (0.11 ppmp-p) and high accuracy (±0.02%) while consuming 260 µA current. The REF54 with low long-term drift (25 ppm), excellent load and line regulation helps meet strict performance requirements of high precision applications. The device family is designed as a companion device for high-resolution data converters such as ADS8900B, ADS127L11, ADS1285 and DAC11001B.

The REF54 family supports wide supply voltage rating of 18 V. This also protects the device in case of power supply IC failure. The REF54 device supports up to 10 mA load current. The wide load current support allows for direct connection of REF54 as power supply to precision sensors.

The REF54 is specified for the two temperature ranges, C grade is specified for 0°C to 70°C and Q grade is specified for -40°C to +125°C . The wide temperature range enables operation across various industrial applications.

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* Data sheet REF54 0.8 ppm/°C Maximum Drift, 0.11 ppmp-p 1/f Noise, 380 μA Current, Precision Voltage Reference datasheet (Rev. A) PDF | HTML 12 Dec 2023
Technical article Increasing X-Ray Image Resolution by Choosing Low-Noise Voltage References PDF | HTML 22 Jan 2024
Technical article 選擇低雜訊電壓參考以提升 X 光影像解析度 PDF | HTML 22 Jan 2024
Technical article 저잡음 전압 레퍼런스를 선택하여 X선 이미지 해상도 향상 PDF | HTML 22 Jan 2024
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 09 Jan 2024
Application note Techniques for Noise Measurements in Precision Series References PDF | HTML 12 Dec 2023
Certificate REF54EVM EU Declaration of Conformity (DoC) 26 Jul 2023
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
White paper Voltage reference selection basics white paper (Rev. A) 23 Oct 2018

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Evaluation board

REF54EVM — REF54 evaluation module for low-power high precision voltage reference with low noise and drift

The REF54 evaluation module (EVM) is a precision voltage reference EVM that demonstrates the performance of the REF54 family of high precision, low drift, low current consumption series voltage reference devices. The REF54 family offers low temperature drift coefficient of 0.5 ppm/°C, low flicker (...)

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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