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4.096-V 4-ppm/°C, 100-µA 6-pin SOT-23 series (bandgap) voltage reference

REF3240 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
REF3440 ACTIVE 4.1-V, low-drift, low-power, small-footprint series voltage reference This is an upgraded version of the REF3240 with lower drift over temperature and lower noise.

Product details

VO (V) 4.096 Initial accuracy (max) (%) 0.2 Temp coeff (max) (ppm/°C) 7, 30 Vin (min) (V) 4.146 Vin (max) (V) 5.5 Iq (typ) (mA) 0.1 Rating Catalog LFN 0.1 to 10 Hz (typ) (µVPP) 53 Iout/Iz (max) (mA) 10 Operating temperature range (°C) -40 to 125
VO (V) 4.096 Initial accuracy (max) (%) 0.2 Temp coeff (max) (ppm/°C) 7, 30 Vin (min) (V) 4.146 Vin (max) (V) 5.5 Iq (typ) (mA) 0.1 Rating Catalog LFN 0.1 to 10 Hz (typ) (µVPP) 53 Iout/Iz (max) (mA) 10 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Excellent Specified Drift Performance:
    • 7ppm/°C (max) at 0°C to +125°C
    • 20ppm/°C (max) at –40°C to +125°C
  • Microsize Package: SOT23-6
  • High Output Current: ±10mA
  • High Accuracy: 0.01%
  • Low Quiescent Current: 100µA
  • Low Dropout: 5mV
  • Excellent Specified Drift Performance:
    • 7ppm/°C (max) at 0°C to +125°C
    • 20ppm/°C (max) at –40°C to +125°C
  • Microsize Package: SOT23-6
  • High Output Current: ±10mA
  • High Accuracy: 0.01%
  • Low Quiescent Current: 100µA
  • Low Dropout: 5mV

The REF32xx is a very low drift, micropower, low-dropout, precision voltage reference family available in the tiny SOT23-6 package.

The small size and low power consumption (120&micr;A max) of the REF32xx make it ideal for portable and battery-powered applications. This reference is stable with any capacitive load.

The REF32xx can be operated from a supply as low as 5mV above the output voltage, under no load conditions. All models are specified for the wide temperature range of –40°C to +125°C.

The REF32xx is a very low drift, micropower, low-dropout, precision voltage reference family available in the tiny SOT23-6 package.

The small size and low power consumption (120&micr;A max) of the REF32xx make it ideal for portable and battery-powered applications. This reference is stable with any capacitive load.

The REF32xx can be operated from a supply as low as 5mV above the output voltage, under no load conditions. All models are specified for the wide temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet 4ppm/°C, 100µA, SOT23-6 Series Voltage Reference datasheet (Rev. C) 22 Jun 2011
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

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

REF3240 PSpice Model (Rev. B)

SBVC014B.ZIP (38 KB) - PSpice Model
Simulation model

REF3240 TINA-TI Reference Design (Rev. C)

SBVC008C.TSC (111 KB) - TINA-TI Reference Design
Simulation model

REF3240 TINA-TI Spice Model (Rev. A)

SBVM006A.ZIP (6 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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Schematic: PDF
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Schematic: PDF
Package Pins Download
SOT-23 (DBV) 6 View options

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