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Series voltage references

REF5040

ACTIVE

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

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Data sheet

REF5040

ACTIVE
Data sheet Order now

Product details

VO (V) 4.096 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 3 Vin (min) (V) 4.296 Vin (max) (V) 18 Iq (typ) (mA) 0.8 Rating Catalog Features TRIM/NR pin LFN 0.1 to 10 Hz (typ) (µVPP) 12 Iout/Iz (max) (mA) 10 Operating temperature range (°C) -40 to 125
VO (V) 4.096 Initial accuracy (max) (%) 0.05 Temp coeff (max) (ppm/°C) 3 Vin (min) (V) 4.296 Vin (max) (V) 18 Iq (typ) (mA) 0.8 Rating Catalog Features TRIM/NR pin LFN 0.1 to 10 Hz (typ) (µVPP) 12 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 µVPP/V
  • Excellent long-term stability:
    • 50 ppm/1000 hr (typical) first 1000 hours (VSSOP)
    • 25 ppm/1000 hr (typical) second 2000 hours (VSSOP)
  • 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 µVPP/V
  • Excellent long-term stability:
    • 50 ppm/1000 hr (typical) first 1000 hours (VSSOP)
    • 25 ppm/1000 hr (typical) 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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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.

Technical documentation

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Type Title Date
* Data sheet REF50xx Low-Noise, Very Low Drift, Precision Voltage Reference datasheet (Rev. J) PDF | HTML 14 Jul 2022
More literature Voltage Reference Design Tips For ADC Pairing (Rev. A) PDF | HTML 02 Jun 2021
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
More literature Long-Term Drift in Voltage References PDF | HTML 25 Mar 2021
More literature Low-Noise Negative Reference Design with REF5025 01 Dec 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
More literature Voltage reference selection basics white paper (Rev. A) 23 Oct 2018
Analog Design Journal Q3 2009 Issue Analog Applications Journal 24 Sep 2018
Analog Design Journal Q4 2009 Issue Analog Applications Journal 24 Sep 2018
Technical article Understanding Voltage References: Ultra-low dropout - not just for the series reference 01 May 2015
Technical article Understanding Voltage References: Shunt vs series. Which topology is right for you? 29 Apr 2015
More literature Stacking the REF50xx for High-Voltage References 29 May 2013
Analog Design Journal How the voltage reference affects ADC performance, Part 3 04 Oct 2009
Analog Design Journal How the voltage reference affects ADC performance, Part 2 14 Jul 2009

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

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