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Product details

Parameters

VO (V) 3 Initial accuracy (Max) (%) 0.15 Temp coeff (Max) (ppm/ degree C) 30 Rating Catalog Vin (Min) (V) 3.2 Vin (Max) (V) 5.5 Iq (Typ) (uA) 3.9 Iout/Iz (Max) (mA) 5 Operating temperature range (C) -40 to 125 open-in-new Find other Series voltage references

Package | Pins | Size

SOT-23 (DBZ) 3 7 mm² 2.92 x 2.37 SOT-SC70 (DCK) 3 3 mm² 2 x 1.3 UQFN (RSE) 8 2 mm² 2 x 1.5 open-in-new Find other Series voltage references

Features

  • 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

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Description

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.

 

 

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Technical documentation

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Type Title Date
* Datasheet REF33xx 3.9-μA, SC70-3, SOT-23-3, and UQFN-8, 30-ppm/°C Drift Voltage Reference datasheet (Rev. H) Jan. 16, 2018
Application notes High-Performance 16-bit PWM to 4- to 20-mA DAC for Field Transmitters Mar. 26, 2020
Application notes REF33xx Functional Safety FIT Rate and Failure Mode Distribution Dec. 18, 2019
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Application notes Diode-Based Temperature Measurements (Rev. A) May 17, 2019
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
Application notes Level Shifting Signals With Differential Amplifiers (Rev. A) Apr. 02, 2018
White papers Tips and tricks for designing with voltage references May 30, 2017

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

The ADS7042 Ultra-Low Power Data Acquisition BoosterPack is a stand-alone system that converts analog sensor data into digital SPI data using the TI ADS7042 Successive Approximation Register Analog-to-Digital Converter.  This BoosterPack has been designed to be compatible with the TI (...)

Features
  • Designed using the ADS7042 precision analog-to-digital converter, OPA316 precision ADC driver, and REF3330 precision voltage reference
  • Nanowatt power consumption of the ADS7042 ADC when sampling at 1 KSPS
  • ADC sampling rates betwen 1 KSPS and 1 MSPS
  • SMA jack for optional external analog signal input
  • (...)
EVALUATION BOARDS Download
document-generic User guide
10
Description

Speed up your op amp prototyping and testing with the 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 directly to existing circuits.

The (...)

Features
  • Simplifies prototyping of SMT IC’s
  • Supports 6 common package types
  • Low Cost

Design tools & simulation

SIMULATION MODELS Download
SBOM242A.ZIP (36 KB) - PSpice Model
SIMULATION MODELS Download
SBOM243A.TSC (106 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM244A.ZIP (6 KB) - TINA-TI Spice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

参考设计 Download
12-Bit, 8 Channel, Integrated Analog Input module for Programmable Logic Controllers (PLC)
TIDA-00119 TIDA-00119  is a complete, highly-integrated PLC analog input module front-end reference design that is designed and tested to meet IEC61000-4 standards for industrial automation systems. The design can be configured for 4 differential inputs or 8 single-ended inputs with 12-bit ADC resolution (...)
document-generic Schematic document-generic User guide
参考设计 Download
Data Acquisition Block for ECG Systems, discrete LEAD I ECG implementation Reference Design
TIPD116 This TI Verified Design is for Electrocardiography (ECG), the measurement of the electrical activity of the heart, a method that requires a precision analog front end instrumentation gain stage, filtering, and high resolution digital conversion. This design features the methodology for achieving a (...)
document-generic Schematic document-generic User guide
参考设计 Download
Low-Power Reference and Bipolar Voltage Conditioning Circuit Reference Design for Low-Power ADCs
TIPD154 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 3 View options
SOT-23 (DBZ) 3 View options
UQFN (RSE) 8 View options

Ordering & quality

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