Product details

VO (V) 3 Initial accuracy (Max) (%) 0.05 Temp coeff (Max) (ppm/ degree C) 3 Vin (Min) (V) 3.2 Vin (Max) (V) 18 Iq (Typ) (uA) 800 Rating Catalog Features TRIM/NR pin Iout/Iz (Max) (mA) 10 Operating temperature range (C) -40 to 125
VO (V) 3 Initial accuracy (Max) (%) 0.05 Temp coeff (Max) (ppm/ degree C) 3 Vin (Min) (V) 3.2 Vin (Max) (V) 18 Iq (Typ) (uA) 800 Rating Catalog Features TRIM/NR pin Iout/Iz (Max) (mA) 10 Operating temperature range (C) -40 to 125
SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9
  • Low temperature drift:
    • High-grade: 3 ppm/°C (Max)
    • Standard-grade: 8 ppm/°C (Max)
  • High Accuracy:
    • High-grade: 0.05% (Max)
    • Standard-rade: 0.1% (Max)
  • Low noise: 3 µVPP/V
  • Excellent long-term stability:
    • 50 ppm/1000 hr (Typ) First 1000 hours (VSSOP)
    • 25 ppm/1000 hr (Typ) Second 2000 hours (VSSOP)
  • High-Output Current: ±10 mA
  • Temperature range: –40°C to 125°C
  • Low temperature drift:
    • High-grade: 3 ppm/°C (Max)
    • Standard-grade: 8 ppm/°C (Max)
  • High Accuracy:
    • High-grade: 0.05% (Max)
    • Standard-rade: 0.1% (Max)
  • Low noise: 3 µVPP/V
  • Excellent long-term stability:
    • 50 ppm/1000 hr (Typ) First 1000 hours (VSSOP)
    • 25 ppm/1000 hr (Typ) Second 2000 hours (VSSOP)
  • High-Output Current: ±10 mA
  • Temperature range: –40°C to 125°C

The REF50xx is a family of low-noise, low-drift, very high precision voltage references. These references are capable of both sinking and sourcing current, and have excellent line and load regulation.

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 REF50xx family ideal for use in high-precision data acquisition systems.

Each reference voltage is available in both high grade (REF50xxIDGK and REF50xxID) and standard grade (REF50xxAIDGK and REF50xxAID). The reference voltages are offered in 8-pin VSSOP and SOIC packages, and are specified from –40°C to 125°C.

The REF50xx is a family of low-noise, low-drift, very high precision voltage references. These references are capable of both sinking and sourcing current, and have excellent line and load regulation.

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 REF50xx family ideal for use in high-precision data acquisition systems.

Each reference voltage is available in both high grade (REF50xxIDGK and REF50xxID) and standard grade (REF50xxAIDGK and REF50xxAID). The reference voltages are offered in 8-pin VSSOP and SOIC packages, and are specified from –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet REF50xx Low-Noise, Very Low Drift, Precision Voltage Reference datasheet (Rev. I) 17 Feb 2020
Application note Voltage Reference Design Tips For ADC Pairing (Rev. A) 02 Jun 2021
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
Application note Long-Term Drift in Voltage References 25 Mar 2021
Application note Low-Noise Negative Reference Design with REF5025 01 Dec 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
White paper Voltage reference selection basics white paper (Rev. A) 23 Oct 2018
Application note Stacking the REF50xx for High-Voltage References 29 May 2013

Design & development

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Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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