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REF5050

ACTIVE

5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

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Data sheet

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REF70 ACTIVE Ultra-high-precision voltage reference with low noise and low drift REF70 offers 10x lower noise (0.23 ppm), better drift performance (2 ppm/°C) and 28-ppm long-term drift in a humidity-resistant ceramic package.

REF5050

ACTIVE
Data sheet Order now

Product details

VO (V) 5 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 3 Vin (min) (V) 5.2 Vin (max) (V) 18 Iq (typ) (mA) 0.8 Rating Catalog Features TRIM/NR pin LFN 0.1 to 10 Hz (typ) (µVPP) 15 Iout/Iz (max) (mA) 10 Operating temperature range (°C) -40 to 125
VO (V) 5 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 3 Vin (min) (V) 5.2 Vin (max) (V) 18 Iq (typ) (mA) 0.8 Rating Catalog Features TRIM/NR pin LFN 0.1 to 10 Hz (typ) (µVPP) 15 Iout/Iz (max) (mA) 10 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Low temperature drift:
    • High-grade: 3 ppm/°C (maximum)
    • Standard-grade: 8 ppm/°C (maximum)
  • High accuracy:
    • High-grade: 0.05% (maximum)
    • Standard-grade: 0.1% (maximum)
  • Low noise: 3 µV PP/V
  • Excellent long-term stability:
    • 22 ppm after first 1000 hours (SOIC-8)
    • 50 ppm after first 1000 hours (VSSOP-8)
  • High-output current: ±10 mA
  • Temperature range: –40°C to 125°C
  • Low temperature drift:
    • High-grade: 3 ppm/°C (maximum)
    • Standard-grade: 8 ppm/°C (maximum)
  • High accuracy:
    • High-grade: 0.05% (maximum)
    • Standard-grade: 0.1% (maximum)
  • Low noise: 3 µV PP/V
  • Excellent long-term stability:
    • 22 ppm after first 1000 hours (SOIC-8)
    • 50 ppm after first 1000 hours (VSSOP-8)
  • 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 an excellent choice 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 an excellent choice 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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Type Title Date
* Data sheet REF50xx Low-Noise, Very Low Drift, Precision Voltage Reference datasheet (Rev. K) PDF | HTML 15 Jun 2023
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 09 Jan 2024
Application note Stacking the REF50xx for High-Voltage References (Rev. B) PDF | HTML 25 Apr 2023
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
Application note Long-Term Drift in Voltage References PDF | HTML 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
Circuit design ±12-V voltage sensing circuit with an isolated amplifier and differential input 20 Sep 2018
Circuit design High-current battery monitor circuit: 0–10A, 0-10kHz, 18 bit 22 Dec 2017
Application note Low Power Input and Reference Driver Circuit for ADS8318 and ADS8319 24 Jun 2009

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