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Automotive 3.3-V 50-ppm/°C, 50-µA in a 3-pin SOT-23 series (bandgap) voltage reference

REF3033-Q1 is not recommended for new designs
Although this product continues to be in production to support previous designs, we don't recommend it for new designs. Consider one of these alternates:
open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
REF31-Q1 ACTIVE Automotive, 20-ppm/°C (max), 100-µA, 3-pin SOT-23 series voltage reference This product is a performance improvement.
Same functionality with different pin-out to the compared device
REF34-Q1 ACTIVE Automotive, low-drift, low-power, small-footprint series voltage reference This device offers low temperature drift at 6 ppm/°C, has an enable pin to save power and has a quiescent current of 95 µA maximum.
NEW REF35-Q1 ACTIVE Automotive, 650-nA quiescent current, 15-ppm/°C drift, ultra-low-power precision voltage reference Improved quiescent current, noise and other parameters

Product details

VO (V) 3.3 Temp coeff (max) (ppm/°C) 50, 60, 65, 80 Vin (min) (V) 3.301 Vin (max) (V) 5.5 Iq (typ) (mA) 0.042 Rating Automotive LFN 0.1 to 10 Hz (typ) (µVPP) 36 Iout/Iz (max) (mA) 25 Operating temperature range (°C) -40 to 85
VO (V) 3.3 Temp coeff (max) (ppm/°C) 50, 60, 65, 80 Vin (min) (V) 3.301 Vin (max) (V) 5.5 Iq (typ) (mA) 0.042 Rating Automotive LFN 0.1 to 10 Hz (typ) (µVPP) 36 Iout/Iz (max) (mA) 25 Operating temperature range (°C) -40 to 85
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Qualified for Automotive Applications
  • Low Dropout Voltage: 1 mV
  • High Output Current: 25 mA
  • High Accuracy: 0.2%
  • Low Quiescent Current: 50 µA (Max)
  • Excellent Specified Drift Performance
    • 50 ppm/°C (Max), TA = 0°C to 70°C
    • 75 ppm/°C (Max), TA = –40°C to 125°C
  • APPLICATIONS
    • Portable, Battery-Powered Equipment
    • Data Acquisition Systems
    • Medical Equipment
    • Hand-Held Test Equipment

  • Qualified for Automotive Applications
  • Low Dropout Voltage: 1 mV
  • High Output Current: 25 mA
  • High Accuracy: 0.2%
  • Low Quiescent Current: 50 µA (Max)
  • Excellent Specified Drift Performance
    • 50 ppm/°C (Max), TA = 0°C to 70°C
    • 75 ppm/°C (Max), TA = –40°C to 125°C
  • APPLICATIONS
    • Portable, Battery-Powered Equipment
    • Data Acquisition Systems
    • Medical Equipment
    • Hand-Held Test Equipment

The REF30xx is a precision low-power low-dropout voltage reference family available in a tiny SOT23-3 (DBV) package.

The REF30xx small size and low power consumption (50 µA max) make it ideal for portable and battery-powered applications. The REF30xx does not require a load capacitor.

Unloaded, the REF30xx can be operated with supplies within 1 mV of output voltage. The device is specified for the automotive temperature range of –40°C to 125°C.

The REF30xx is a precision low-power low-dropout voltage reference family available in a tiny SOT23-3 (DBV) package.

The REF30xx small size and low power consumption (50 µA max) make it ideal for portable and battery-powered applications. The REF30xx does not require a load capacitor.

Unloaded, the REF30xx can be operated with supplies within 1 mV of output voltage. The device is specified for the automotive temperature range of –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet 50 ppm/C Max, 50 uA, CMOS Voltage Reference datasheet 11 Jan 2010
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 09 Jan 2024
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
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
Analog Design Journal Getting the most out of your instrumentation amplifier design 10 Oct 2005

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