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Product details

Parameters

VO (V) 3, 1.5 Initial accuracy (Max) (%) 0.05 Temp coeff (Max) (ppm/ degree C) 8 Rating Catalog Vin (Min) (V) 3.02 Vin (Max) (V) 5.5 Iq (Typ) (uA) 360 Features Multiple outputs, Enable pin Iout/Iz (Max) (mA) 20 Operating temperature range (C) -40 to 125 Shutdown current (Typ) (uA) 3.3 open-in-new Find other Series voltage references

Package | Pins | Size

SOT-23-THN (DDC) 5 8 mm² 2.9 x 2.8 open-in-new Find other Series voltage references

Features

  • Two Outputs, VREF and VREF / 2, for Convenient Use in Single-Supply Systems
  • Excellent Temperature Drift Performance:
    • 8 ppm/°C (max) from –40°C to 125°C
  • High Initial Accuracy: ±0.05% (max)
  • VREF and VBIAS Tracking over Temperature:
    • 6 ppm/°C (max) from –40°C to 85°C
    • 7 ppm/°C (max) from –40°C to 125°C
  • Microsize Package: SOT23-5
  • Low Dropout Voltage: 10 mV
  • High Output Current: ±20 mA
  • Low Quiescent Current: 360 µA
  • Line Regulation: 3 ppm/V
  • Load Regulation: 8 ppm/mA
  • Matte-Sn version (REF2025AISDDCR) for improved corrosion resistance in the Battelle Class III and similar harsh environments

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Description

Applications with only a positive supply voltage often require additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF20xx provides a reference voltage (VREF) for the ADC and a second highly-accurate voltage (VBIAS) that can be used to bias the input bipolar signals.

The REF20xx offers excellent temperature drift
(8 ppm/°C, max) and initial accuracy (0.05%) on both the VREF and VBIAS outputs while operating at a quiescent current less than 430 µA. In addition, the VREF and VBIAS outputs track each other with a precision of 6 ppm/°C (max) across the temperature range of –40°C to 85°C. All these features increase the precision of the signal chain and decrease board space, while reducing the cost of the system as compared to a discrete solution. Extremely low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful in battery-operated systems.

Both the VREF and VBIAS voltages have the same excellent specifications and can sink and source current equally well. Very good long-term stability and low noise levels make these devices ideally-suited for high-precision industrial applications.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet REF20xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References datasheet (Rev. D) Jun. 04, 2018
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Application note Level Shifting Signals With Differential Amplifiers (Rev. A) Apr. 02, 2018
E-book Tips and tricks for designing with voltage references May 30, 2017
Technical articles Part 3 - A voltage reference duel of duals Sep. 16, 2014
Technical articles Part 2 - A voltage reference duel of duals Sep. 05, 2014
Technical articles Part 1- A voltage reference duel of duals Sep. 03, 2014
Technical articles Resistor divider drift: when 5ppm + 5ppm = 5 ppm Jun. 19, 2014

Design & development

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

Hardware development

EVALUATION BOARD Download
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 MODEL Download
SBOM897.ZIP (8 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBOM898.TSC (21 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOM899.ZIP (35 KB) - PSpice Model
SIMULATION TOOL 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

REFERENCE DESIGNS Download
In-phase current-sense reference design for 230-VAC motor drives using hall-effect current sensors
TIDA-010059 — This reference design features the Hall-effect current sensor, TMCS1100, that can measure currents with an absolute error of < 1% (–40 to 125°C) and provide a working isolation voltage of up to 600 V. The low-resistance in-package current sensing element and lack of need for high-side (...)
document-generic Schematic
REFERENCE DESIGNS Download
Low-Drift Bidirectional Single-Supply Low-Side Current Sensing Reference Design
TIPD156 This Verified TI Precision Design implements a low-drift, bi-directional, low-side, single-supply current sensing solution that measures load currents from -2.5 A to +2.5 A.  The output range is from 250 mV to 2.75 V, with 0 A current centered at 1.5 V.  To achieve low-drift performance (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOT-23-THIN (DDC) 5 View options

Ordering & quality

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