Home Power management Voltage references Series voltage references

REF3312

ACTIVE

1.25-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference

A newer version of this product is available

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
REF35 ACTIVE 650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference 680-nA ultra-low-power, wide OTP programmable-voltage option from 1.024 V to 5 V and high precision at 0.05% intial accuracy and 6ppm/°C drift.

Product details

VO (V) 1.25 Initial accuracy (max) (%) 0.15 Temp coeff (max) (ppm/°C) 30 Vin (min) (V) 1.7 Vin (max) (V) 5.5 Iq (typ) (mA) 0.0039 Rating Catalog LFN 0.1 to 10 Hz (typ) (µVPP) 35 Iout/Iz (max) (mA) 5 Operating temperature range (°C) -40 to 125
VO (V) 1.25 Initial accuracy (max) (%) 0.15 Temp coeff (max) (ppm/°C) 30 Vin (min) (V) 1.7 Vin (max) (V) 5.5 Iq (typ) (mA) 0.0039 Rating Catalog LFN 0.1 to 10 Hz (typ) (µVPP) 35 Iout/Iz (max) (mA) 5 Operating temperature range (°C) -40 to 125
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37 SOT-SC70 (DCK) 3 4.2 mm² 2 x 2.1 UQFN (RSE) 8 2.25 mm² 1.5 x 1.5
  • Microsize Packages: SC70-3, SOT-23-3, UQFN-8
  • Low Supply Current: 3.9 µA (typ)
  • Extremely Low Dropout Voltage: 110 mV (typ)
  • High Output Current: ±5 mA
  • Low Temperature Drift: 30 ppm/°C (max)
  • High Initial Accuracy: ±0.15% (max)
  • 0.1-Hz to 10-Hz Noise: 35 µVPP (REF3312)
  • Voltage Options: 1.2 V, 1.8 V, 2.5 V, 3 V, 3.3 V
  • Microsize Packages: SC70-3, SOT-23-3, UQFN-8
  • Low Supply Current: 3.9 µA (typ)
  • Extremely Low Dropout Voltage: 110 mV (typ)
  • High Output Current: ±5 mA
  • Low Temperature Drift: 30 ppm/°C (max)
  • High Initial Accuracy: ±0.15% (max)
  • 0.1-Hz to 10-Hz Noise: 35 µVPP (REF3312)
  • Voltage Options: 1.2 V, 1.8 V, 2.5 V, 3 V, 3.3 V

The REF33xx is a low-power, precision, low-dropout voltage reference family available in tiny SC70-3 and SOT-23-3 packages, and in a 1.5-mm × 1.5-mm UQFN-8 package. Small size and low power consumption (5-µA max) make the REF33xx ideal for a wide variety of portable and battery-powered applications.

The REF33xx can be operated at a supply voltage 180 mV above the specified output voltage under normal load conditions, with the exception of the REF3312, which has a minimum supply voltage of 1.7 V. All models are specified for the wide temperature range of –40°C to +125°C.

 

 

The REF33xx is a low-power, precision, low-dropout voltage reference family available in tiny SC70-3 and SOT-23-3 packages, and in a 1.5-mm × 1.5-mm UQFN-8 package. Small size and low power consumption (5-µA max) make the REF33xx ideal for a wide variety of portable and battery-powered applications.

The REF33xx can be operated at a supply voltage 180 mV above the specified output voltage under normal load conditions, with the exception of the REF3312, which has a minimum supply voltage of 1.7 V. All models are specified for the wide temperature range of –40°C to +125°C.

 

 

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 9
Type Title Date
* Data sheet REF33xx 3.9-μA, SC70-3, SOT-23-3, and UQFN-8, 30-ppm/°C Drift Voltage Reference datasheet (Rev. H) PDF | HTML 16 Jan 2018
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
White paper Simplifying Signal Chain Design for High Performance in Small Systems 22 Oct 2020
Functional safety information REF33xx Functional Safety FIT Rate and Failure Mode Distribution 18 Dec 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Application note Diode-Based Temperature Measurements (Rev. A) 17 May 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

Design & development

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

Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP adapter evaluation module (DIP-ADAPTER-EVM), which provides a fast, easy and inexpensive way to interface with small surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them (...)

User guide: PDF
Not available on TI.com
Simulation model

REF3312 PSpice Model (Rev. A)

SBOM230A.ZIP (55 KB) - PSpice Model
Simulation model

REF3312 TINA-TI Reference Design (Rev. A)

SBOM231A.TSC (89 KB) - TINA-TI Reference Design
Simulation model

REF3312 TINA-TI Spice Model (Rev. A)

SBOM232A.ZIP (6 KB) - TINA-TI Spice Model
Simulation tool

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

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-050039 — Energy harvesting from single cell solar panel for li-ion battery reference design

The TIDA-050039 reference design demonstrates how to use a fully-integrated synchronous boost converter TPS61089 in combination with a single-cell solar panel to charge a li-ion battery. An additional maximum power-point (MPP) sampling network is implemented to dynamically control the input (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIPD154 — Low-Power Reference and Bipolar Voltage Conditioning Circuit Reference Design for Low-Power ADCs

This TI Precision Verified Design provides the theory, component selection, and simulation for a single-supply, low-power signal conditioning circuit designed to translate a +/-5 V input signal to the proper input range of a single-supply low-power 16-Bit ΔΣ ADC such as the one inside (...)
User guide: PDF
Schematic: PDF
Package Pins Download
SOT-23 (DBZ) 3 View options
SOT-SC70 (DCK) 3 View options
UQFN (RSE) 8 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos