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REF5040

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

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

REF5040

ACTIVE
Data sheet Order now

Product details

Parameters

VO (V) 4.096 Initial accuracy (Max) (%) 0.05 Temp coeff (Max) (ppm/ degree C) 3 Rating Catalog Vin (Min) (V) 4.296 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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NEW REF70 ACTIVE Ultra-high-precision voltage reference with low noise and low drift REF70 offers 10x lower noise (0.23 ppm), better drift performance (2 ppm/°C) and 28-ppm long-term drift in a humidity-resistant ceramic package.

Technical documentation

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Type Title Date
* Data sheet REF50xx Low-Noise, Very Low Drift, Precision Voltage Reference datasheet (Rev. I) Feb. 17, 2020
E-book Tips and tricks for designing with voltage references (Rev. A) May 07, 2021
Application note Long-Term Drift in Voltage References Mar. 25, 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
White paper Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
Application note Q3 2009 Issue Analog Applications Journal Sep. 24, 2018
Application note Q4 2009 Issue Analog Applications Journal Sep. 24, 2018
Selection guide TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Technical article Understanding Voltage References: Ultra-low dropout - not just for the series reference May 01, 2015
Technical article Understanding Voltage References: Shunt vs series. Which topology is right for you? Apr. 29, 2015
Application note Stacking the REF50xx for High-Voltage References May 29, 2013
Application note How the voltage reference affects ADC performance, Part 3 Oct. 04, 2009
Application note How the voltage reference affects ADC performance, Part 2 Jul. 14, 2009

Design & development

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

Hardware development

EVALUATION BOARD Download
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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
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Design tools & simulation

SIMULATION MODEL Download
SLIM167A.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLIM168A.TSC (130 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLIM169A.ZIP (39 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
  • (...)
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Reference designs

REFERENCE DESIGNS Download
High-Precision Reference Design for Buffering a DAC Signal
TIDA-01402 — This reference design features the industry's first zero-crossover and zero-drift amplifier (OPA388) to buffer the analog output of a digital-to-analog converter (DAC). It demonstrates the importance of the zero-crossover and zero-drift feature and how they can minimize the integral non-linearity (...)
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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 (...)
document-generic Schematic document-generic User guide
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 (...)
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REFERENCE DESIGNS Download
Isolated, High-Accuracy Analog Input Module Reference Design Using 16-Bit ADC and Digital Isolator
TIDA-01214 — This reference design provides accurate measurements of AC voltage and current inputs using a precision 16-bit SAR ADC over a wide input range, covering protection and measurement range (including sampling requirements of IEC 61850-9-2), simplifying system design and improving trip time performance (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Multi-Rail Power Reference Design for Eliminating EMI Effects in High Performance DAQ Systems
TIDA-01054 — The TIDA-01054 reference design helps eliminate the performance degrading effects of EMI on Data Acquisition (DAQ) systems greater than 16 bits with the help of the LM53635 buck converter. The buck converter enables the designer to place power solutions close to the signal path without the unwanted (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
ADC Voltage Reference Buffer Optimization Reference Design for High Performance DAQ Systems
TIDA-01055 — The TIDA-01055 reference design for high performance DAQ Systems optimizes the ADC reference buffer to improve SNR performance and reduce power consumption with the TI OPA837 high-speed op amp. This device is used in a composite buffer configuration and provides a 22% power improvement over (...)
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REFERENCE DESIGNS Download
Reference Design Maximizing Signal Dynamic Range for True 10 Vpp Differential Input to 20 bit ADC
TIDA-01057 — This reference design is designed for high performance data acquisition(DAQ) systems to improve the dynamic range of 20 bit differential input ADCs. Many DAQ systems require the measurement capability at a wide FSR (Full Scale Range) in order to obtain sufficient signal dynamic range. Many earlier (...)
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REFERENCE DESIGNS Download
20-bit 1MSPS DAQ Reference Design Optimizing Power Supply Efficiency While Minimizing EMI
TIDA-01056 — This reference design for high performance data acquisition (DAQ) systems optimizes power stage in order to reduce power consumption and minimize the effect of EMI from switching regulator by using LMS3635-Q1 buck converter.  This reference designs yields 7.2% efficiency improvement at most (...)
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REFERENCE DESIGNS Download
16 bit 1MSPS Data Acquisition Reference Design for Single-Ended Multiplexed Applications
TIPD173 — This TI Precision Verified Design details a systematic design methodology for a 16 bit, 1MSPS, single-ended data acquisition (DAQ) block optimized to achieve excellent settling time, power consumption, static performance and dynamic performance for multiplexed applications.  The design features (...)
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CAD/CAE symbols

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

Ordering & quality

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