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Product details

Parameters

VO (V) 4.5 Initial accuracy (Max) (%) 0.05 Temp coeff (Max) (ppm/ degree C) 3 Rating Catalog Vin (Min) (V) 4.7 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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet REF50xx Low-Noise, Very Low Drift, Precision Voltage Reference datasheet (Rev. I) Feb. 17, 2020
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Application notes High-input impedance, true differential, AFE attenuator circuit for SAR ADCs (Rev. A) Mar. 08, 2019
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
White papers Voltage-reference impact on total harmonic distortion Aug. 01, 2016
Application notes Stacking the REF50xx for High-Voltage References May 29, 2013

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
49
Description

BOOSTXL-ADS7841-Q1 is a platform for evaluating the performance of the ADS7841-Q1 4-channel, 12-bit, SAR ADC with an SPI-compatible serial interface. The evaluation kit includes the ADS7841-Q1 BoosterPack™ plug-in module and PC software that enables the user to configure the (...)

Features
  • Hardware and software for testing and evaluation of the ADS7841-Q1 SAR ADC
  • USB powered; no external power supply required
  • Uses EK-TM4C1294XL Launchpad™ evaluation kit (not included), which provides a convenient communication interface to ADS7841-Q1 over a USB for power delivery, as well as (...)
EVALUATION BOARDS Download
document-generic User guide
49
Description

BOOSTXL-TLC24531 is a platform for evaluating the performance of the TLC2453-Q1, which is an 11-channel, 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) with a SPI-compatible serial interface. The evaluation kit includes the TLC2453-Q1 BoosterPack board and PC (...)

Features
  • Includes hardware and software required for testing and evaluation of TLC2453-Q1 SAR ADC
  • USB powered; no external power supply required
  • Uses EK-TM4C1294XL LaunchPad™ development kit (not included) that provides a convenient communication interface to TLC2543-Q1 ADC over a USB for power (...)
EVALUATION BOARDS Download
document-generic User guide
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
SLIM170A.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLIM171A.TSC (130 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLIM172A.ZIP (39 KB) - PSpice 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

REFERENCE DESIGNS Download
Data Acquisition Optimized for Lowest Distortion, Lowest Noise, 18 bit, 1Msps Reference Design
TIPD115 This TI Verified Design is a high performance data acquisition system (DAQ) using an 18-bit SAR ADC, ADS8881 at a throughput of 1MSPS. This design has been optimized to provide the lowest noise & distortion solution for a full scale input sinewave of 10 KHz. This leads to a maximum possible (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Data Acquisition for 10kHz AC, 35mW, 18 bit, 1Msps Reference Design
TIPD113 This TI Verified Design is a high performance data acquisition system (DAQ) using an 18-bit SAR ADC, ADS8881 at a throughput of 1MSPS. This design has been optimized to provide the lowest power solution for a full scale input sine wave of 10 KHz. At a total power consumption of less than 35mW, this (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Data Acquisition for MUX and Step Inputs, 18 bits, 1uS Full Scale Response Reference Design
TIPD112 This TI Verified Design is a high performance data acquisition system (DAQ) using an 18-bit SAR ADC, ADS8881 at a throughput of 1MSPS. This design has been optimized to provide 18-bit settling performance for a Full Scale Step Input signal, thus leading to excellent system linearity. Such an input (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
18-bit, 2-Msps Isolated Data Acquisition Reference Design to Achieve Maximum SNR and Sampling Rate
TIDA-00732 This “18-bit, 2-Msps Isolated Data Acquisition Reference Design to achieve maximum SNR and sampling rate”  illustrates how to overcome performance-limiting challenges typical of isolated data acquisition system design:
  • Maximizing sampling rate by minimizing propagation delay introduced by digital (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
16-Bit, 1MSPS Multiplexed Data Acquisition Reference Design
TIPD169 This design is for a 16-bit 1MSPS single-ended, multiplexed data acquisition system (DAQ) for dc inputs. The system is composed of a 16-bit successive-approximation-register (SAR) analog-to-digital converter (ADC), SAR ADC driver, reference driver, and multiplexer. The design shows the process to (...)
document-generic Schematic document-generic User guide
Design files

CAD/CAE symbols

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

Ordering & quality

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