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REF5025

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2.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

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2.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

REF5025

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Product details

Parameters

VO (V) 2.5 Initial accuracy (Max) (%) 0.05 Temp coeff (Max) (ppm/ degree C) 3 Rating Catalog Vin (Min) (V) 2.7 Vin (Max) (V) 18 Iq (Typ) (uA) 800 Features TRIM/NR pin Iout/Iz (Max) (mA) 10 Operating temperature range (C) -40 to 125 open-in-new Find other Series voltage references

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Series voltage references

Features

  • Low temperature drift:
    • High-grade: 3 ppm/°C (Max)
    • Standard-grade: 8 ppm/°C (Max)
  • High Accuracy:
    • High-grade: 0.05% (Max)
    • Standard-rade: 0.1% (Max)
  • Low noise: 3 µVPP/V
  • Excellent long-term stability:
    • 50 ppm/1000 hr (Typ) First 1000 hours (VSSOP)
    • 25 ppm/1000 hr (Typ) Second 2000 hours (VSSOP)
  • High-Output Current: ±10 mA
  • Temperature range: –40°C to 125°C

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Description

The REF50xx is a family of low-noise, low-drift, very high precision voltage references. These references are capable of both sinking and sourcing current, and have excellent line and load regulation.

Excellent temperature drift (3 ppm/°C) and high accuracy (0.05%) are achieved using proprietary design techniques. These features, combined with very low noise, make the REF50xx family ideal for use in high-precision data acquisition systems.

Each reference voltage is available in both high grade (REF50xxIDGK and REF50xxID) and standard grade (REF50xxAIDGK and REF50xxAID). The reference voltages are offered in 8-pin VSSOP and SOIC packages, and are specified from –40°C to 125°C.

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Technical documentation

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No results found. Please clear your search and try again. View all 14
Type Title Date
* Datasheet REF50xx Low-Noise, Very Low Drift, Precision Voltage Reference datasheet (Rev. I) Feb. 17, 2020
Application notes Low-Noise Negative Reference Design with REF5025 Dec. 01, 2019
Application notes Voltage Reference Design Tips For ADC Pairing Nov. 05, 2019
More literature Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Application notes Circuit showing overstress protection on ADC with integrated analog front end Nov. 27, 2018
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
More literature Tips and tricks for designing with voltage references May 30, 2017
Technical articles Find the "Goldilocks" voltage reference for your application Sep. 02, 2016
Technical articles The impact of voltage reference noise on delta-sigma ADC resolution Dec. 11, 2015
User guides DAC8562TEVM User's Guide Oct. 07, 2015
Technical articles Understanding voltage references: level shift of precision voltage references May 15, 2015
Technical articles IC long-term stability: The only constant is change Feb. 20, 2014
Application notes Stacking the REF50xx for High-Voltage References May 29, 2013
More literature DAC8734 - Smallest 16-Bit Quad High-Voltage DAC [WMV] Feb. 18, 2010

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 ADS124S08EVM is a platform for evaluation of the ADS124S08 analog-to-digital converter (ADC). The ADS124S08 is a 24-bit, 4kSPS, 12 channel, low-power Delta-Sigma ADC for sensor measurement and process control applications. The ADS124S08 also includes a highly-accurate oscillator and excellent (...)
Features
  • Includes all required support circuitry for the ADS124S08
  • Delta-Sigma ADC EvaluaTIon software enables quick configuration and analysis
  • Configurable inputs, references, supplies and clock sources
  • Easily accessible signals via test points and headers
View details
EVALUATION BOARDS Download
document-generic User guide
$3,499.00
Description

The ADS1282-SP EVM is a compact evaluation kit for evaluating the ADS1282-SP, a radiation-tolerant, extremely high-performance, dual-channel ADC. The ADS1282-SP EVM plugs directly to the MSP430FR5959 launchpad (not included with ADS1282-SP EVM) which connects to PC via USB. Complete evaluation (...)

Features
  • Plug and play compatibility with the MSP430FR5969 Launchpad (not included with EVM kit)
  • Easy to use software compatible with Windows 7
  • Built in analysis tools including time domain and FFT graphing
  • Data collection to text files
  • Complete control of device configuration
View details
EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

The ADS8686S evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the ADS8686S dual simultaneous-sampling analog-to-digital converter (ADC) with an integrated analog front end (AFE).

ADS8686SEVM-PDK includes the ADS8686SEVM board and a precision host interface (PHI (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance of ADS8686S ADC
  • PHI controller provides a convenient communication interface to ADS8686SEVM over USB 2.0 (or higher) for power delivery, as well as digital input/output
  • Easy-to-use evaluation software for (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

The ADS9224R evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS9224R successive-approximation register (SAR) analog-to-digital converter (ADC), which is a fully-differential input, 16-bit, 3-MSPS device. ADS9224REVM-PDK (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of ADS9224R ADC
  • USB powered; no external power supply required
  • PHI controller provides a convenient communication interface to ADS9224R ADC over USB 2.0 (or higher) for power (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$8,499.00
Description

 

The DLP NIRscan is a complete evaluation module (EVM) to design a high performance, affordable near-infrared spectrometer.  This flexible tool contains everything a designer needs to start developing a DLP-based spectrometer right out of the box.  The EVM features the DLP 0.45 WXGA NIR (...)

Features

The DLP® NIRscan™ evaluation module includes the key features highlighted below. For mobile sensing, check out the DLP NIRscan Nano evaluation module. The table compares the key specifications of both evaluation modules.

  High Performance EVM MobileSensing EVM
Key Features DLP NIRscan DLP NIRscan Nano
(...)
View details
DEVELOPMENT KITS Download
document-generic User guide
$699.00
Description

The K2G Evaluation Module (EVM) enables developers to immediately start evaluating the 66AK2Gx - 600MHz processor, and to accelerate the development of audio, industrial motor control, smart grid protection and other high reliability, real-time compute intensive applications.  Similar to (...)

Features
  • 66AK2G02 C66x DSP+ARM A15 Processor at 600MHz
  • 2-GByte DDR3L with ECC
  • TPS659118 PMIC
  • Audio and Serial expansion headers
  • Processor SDK Linux and TI-RTOS support
  • Supports Gigabit Ethernet
View details
DEVELOPMENT KITS Download
document-generic User guide
$699.00
Description

The EVMK2GX (also known as "K2G") 1GHz Evaluation Module (EVM) enables developers to immediately start evaluating the 66AK2Gx processor family, and to accelerate the development of audio, industrial motor control, smart grid protection and other high reliability, real-time compute intensive (...)

Features
  • 66AK2G12 C66x DSP+ARM A15 Processor at 1GHz
  • 2-GByte DDR3L with ECC
  • TPS65911A PMIC
  • Audio and serial expansion headers
  • Processor SDK Linux and TI-RTOS support
View details
DEVELOPMENT KITS Download
document-generic User guide
$1,049.00
Description

The K2G 1GHz High Secure Evaluation Module (EVM) enables developers to start  evaluating and testing the programming of the  high secure developmental version of the  66AK2Gx processor, and to accelerate the next stage of secure boot product development of audio and industrial real (...)

Features
  • 66AK2G12 C66x DSP+ARM A15 Processor at 1GHz
  • 2-GByte DDR3L with ECC
  • TPS65911A PMIC
  • Audio and serial expansion headers
  • Processor SDK Linux and TI-RTOS support
View details

Design tools & simulation

SIMULATION MODELS Download
SLIM161A.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLIM162A.TSC (134 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLIM163A.ZIP (39 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
High accuracy analog input module reference design with 16-bit 1-MSPS dual simultaneous-sampling ADC
TIDA-01576 — This reference design accurately measures 16-channel AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range. This range covers protection and measurement requirements (including sampling requirements as per IEC 61850-9-2), which simplifies system design and improves (...)
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High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design
TIDA-00834 — The TIDA-00834 reference design accurately measures voltage and current inputs using simultaneously sampled, 16-bit, ±10 V, bipolar input SAR ADC critical to identify power systems malfunction and power quality related failures accurately and quickly. This results in reduced power systems (...)
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Battery Tester Reference Design for High Current Applications
TIDA-01040 — Li-Ion battery formation and electrical testing require accurate voltage and current control, usually to better than ±0.05% over the specified temperature range.  This reference design proposes a solution for high-current (up to 50 A) battery tester applications supporting input (bus (...)
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REFERENCE DESIGNS Download
Battery tester reference design for multi-phase high-precision 0.5 to 100 A battery formation
TIDA-01041 — This reference design provides a multi-phase solution for a wide range of current battery test applications. Leveraging the dual phase buck/boost controller LM5170's daisy chain configuration gives the design the ability to achieve 100A charging/discharging rates. Utilizing high accuracy constant (...)
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REFERENCE DESIGNS Download
Flat-Clamp TVS based Reference Design for Protection Against Transient for Grid Applications
TIDA-010008 — This reference design features multiple approaches for  protecting AC or DC analog input, DC analog output, AC or DC binary input, digital output with a high side or low side driver, LCD bias supply, USB interfaces (power and data) and onboard power supplies with 24, 12 or 5V input used in (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Non-isolated power architecture with diagnostics reference design for protection relay modules
TIDA-010055 — This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
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REFERENCE DESIGNS Download
Modular battery tester reference design for 50-A, 100-A, and 200-A applications
TIDA-01042 — This reference design provides a modular battery test solution allowing users to have the flexibility to test batteries at different current levels with one design. This design leverages the TIDA-01041 reference design by providing two 100-A battery testers that can work independently or be (...)
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REFERENCE DESIGNS Download
DLP Ultra-mobile NIR Spectrometer for Portable Chemical Analysis with Bluetooth Connectivity
TIDA-00554 — The ultra-mobile near-infrared (NIR) spectrometer reference design utilizes Texas Instruments' DLP technology in conjunction with a single-element InGaAs detector to deliver high performance measurements in a portable form factor that is more affordable than architectures using an expensive InGaAs (...)
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Design files
View details
REFERENCE DESIGNS Download
Differential Signal Conditioning Circuit for Current and Voltage Measurement Using Fluxgate Sensors
TIDA-00201 — This design provides a 4-channel signal conditioning solution for differential ADCs integrated into a microcontroller measuring motor current using fluxgate sensors. Also provided is an alternative measurement circuit with external differential SAR ADCs as well as circuits for high-speed overcurrent (...)
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REFERENCE DESIGNS Download
Single-Ended Signal Conditioning Circuit for Current and Voltage Measurement Using Fluxgate Sensors
TIDA-00208 — This design provides a 4-channel signal conditioning solution for single-ended SAR ADCs integrated into a microcontroller measuring motor current using fluxgate sensors. Also provided is an alternative measurement circuit with external SAR ADCs as well as circuits for high-speed overcurrent and (...)
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REFERENCE DESIGNS Download
High-Speed, High-Side Current Sense Reference Design
TIDA-00976 — The TIDA-00976 TI Design is a high-speed current-to-voltage circuit. This design is optimized for current-sense applications that require high-speed current measurements in the positive supply rail for voltages from 5 to 30 V. This design will reduce the common-mode voltage from 30 V and produce an (...)
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REFERENCE DESIGNS Download
DLP Near-Infrared Spectrometer for Optical Analysis of Liquids & Solids Reference Design
TIDA-00155 — This near-infrared (NIR) spectrometer reference design utilizes Texas Instruments' DLP technology in conjunction with a single-element InGaAs detector to deliver high performance measurements in a portable form factor that is more affordable than expensive InGaAs array detector or fragile rotating (...)
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REFERENCE DESIGNS Download
Transient and Digital Fault Recorder AFE Using Differential Amplifiers and HS ADC Reference Design
TIDA-00499 — While Digital Fault Recorders (DFR) can detect transients in 17/20 μs at 60/50 Hz, Transient Recorders capture disturbances that can peak and decay well within a microsecond. This TI Design demonstrates the capturing of transient inputs at up to 1 MHz for Digital Fault Recorder and 25 MHz for (...)
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REFERENCE DESIGNS Download
Single-Supply Strain Gauge in a Bridge Configuration Reference Design
TIPD170 — This strain gauge reference design accurately measures the resistance of a strain gauge by being placed in a bridge configuration. The differential voltage of the bridge produced by variation in strain gauge resistance is amplified using the INA333. The bridge excitation voltage and INA333 reference (...)
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Design files
View details
REFERENCE DESIGNS Download
Voltage-Mode Multiplying DAC Reference Design
TIPD159 — This multiplying DAC (MDAC) circuit creates a unipolar voltage output from 0 V to 2.5 V. This design does not require dual supplies to realize a unipolar, positive output voltage as with typical MDAC circuits. This design removes the need for a negative rail by using the MDAC in (...)
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Design files
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REFERENCE DESIGNS Download
Analog Input Module for Industrial Outputs and Temperature Sensors Reference Design
TIPD164 — This TI Designs, Precision Verified design implements an analog input module for industrial voltages, currents, and temperature sensors.  For industrial outputs, the possible input ranges include: 4-20 mA, 0-20 mA, +/-25 mA, 0-5 V, 0-10 V, +/-5 V, +/-10 V. The design includes conditioning (...)
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Design files
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REFERENCE DESIGNS Download
Bridge Tied Load (BTL) V-I Converter, 0.5-4.5V to +/-2A
TIPD103 — This Verified Design circuit is a bidirectional current source that can be used to drive floating loads, specifically thermo-electric coolers (TECs) from a single-ended source. The circuit makes use of an internal output current monitor circuit (IMON), which is a special feature of the OPA569 power (...)
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CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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