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Series voltage references

REF5045A-Q1

ACTIVE

Automotive, low-noise, very-low drift, precision 4.5-V series voltage reference

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REF70 ACTIVE Ultra-high-precision voltage reference with low noise and low drift Improved flicker noise, temperature drift and initial accuracy

REF5045A-Q1

ACTIVE
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Product details

Rating Automotive VO (V) 4.5 Temp coeff (max) (ppm/°C) 8 Initial accuracy (max) (%) 0.1 Features TRIM/NR pin Iout/Iz (max) (mA) 10 Vin (min) (V) 4.7 Vin (max) (V) 18 Iq (typ) (mA) 0.8, 800 TI functional safety category Functional Safety-Capable LFN 0.1 to 10 Hz (typ) (µVPP) 13.5 Operating temperature range (°C) -40 to 125
Rating Automotive VO (V) 4.5 Temp coeff (max) (ppm/°C) 8 Initial accuracy (max) (%) 0.1 Features TRIM/NR pin Iout/Iz (max) (mA) 10 Vin (min) (V) 4.7 Vin (max) (V) 18 Iq (typ) (mA) 0.8, 800 TI functional safety category Functional Safety-Capable LFN 0.1 to 10 Hz (typ) (µVPP) 13.5 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Qualified for Automotive Applications
  • Low Temperature Drift
    • Standard Grade: 8 ppm/°C (max)
  • High Accuracy
    • Standard Grade: 0.1% (max)
  • Low Noise: 3 µVPP/V
  • Excellent Long-Term Stability:
    • 5 ppm/1000 hr (typ) after 1000 hours
  • High Output Current: ±10 mA
  • Temperature Range: –40°C to 125°C
  • Qualified for Automotive Applications
  • Low Temperature Drift
    • Standard Grade: 8 ppm/°C (max)
  • High Accuracy
    • Standard Grade: 0.1% (max)
  • Low Noise: 3 µVPP/V
  • Excellent Long-Term Stability:
    • 5 ppm/1000 hr (typ) after 1000 hours
  • High Output Current: ±10 mA
  • Temperature Range: –40°C to 125°C

The REF50xxA-Q1 family of devices is low-noise, low-drift, very-high precision-voltage reference. These reference devices are capable of both sinking and sourcing, and are very robust with regard to line and load changes.

Excellent temperature drift (3 ppm/°C) and high accuracy (0.05%) are achieved using proprietary design techniques. These features combined with very low noise make the REF50xxA-Q1 family of devices ideal for use in high-precision data acquisition systems.

Each reference voltage is available in a standard-grade versions. The devices are offered in SO-8 packages and are specified from –40°C to 125°C.

The REF50xxA-Q1 family of devices is low-noise, low-drift, very-high precision-voltage reference. These reference devices are capable of both sinking and sourcing, and are very robust with regard to line and load changes.

Excellent temperature drift (3 ppm/°C) and high accuracy (0.05%) are achieved using proprietary design techniques. These features combined with very low noise make the REF50xxA-Q1 family of devices ideal for use in high-precision data acquisition systems.

Each reference voltage is available in a standard-grade versions. The devices are offered in SO-8 packages and are specified from –40°C to 125°C.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet REF50xxA-Q1 Low-Noise, Very Low Drift, Precision Voltage Reference datasheet (Rev. H) PDF | HTML Feb 24, 2015
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML Jan 9, 2024
E-book Tips and tricks for designing with voltage references (Rev. A) May 7, 2021
Application note Long-Term Drift in Voltage References PDF | HTML Mar 25, 2021
Functional safety information REF50xxA-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec 19, 2019
Application note Low-Noise Negative Reference Design with REF5025 Dec 1, 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun 28, 2019
White paper Voltage reference selection basics white paper (Rev. A) Oct 23, 2018

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