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REF5050

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

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

REF5050

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Data sheet Order now

Product details

Parameters

VO (V) 5 Initial accuracy (Max) (%) 0.05 Temp coeff (Max) (ppm/ degree C) 3 Rating Catalog Vin (Min) (V) 5.2 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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Type Title Date
* Datasheet REF50xx Low-Noise, Very Low Drift, Precision Voltage Reference datasheet (Rev. I) Feb. 17, 2020
More literature Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
Application notes ±12-V voltage sensing circuit with an isolated amplifier and differential input Sep. 20, 2018
Application notes High-current battery monitor circuit: 0–10A, 0-10kHz, 18 bit Dec. 22, 2017
More literature Tips and tricks for designing with voltage references May 30, 2017
Selection guides TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Technical articles How to achieve higher-precision data acquisition in benchtop test equipment Dec. 16, 2016
Technical articles Understanding voltage references: level shift of precision voltage references May 15, 2015
Technical articles Understanding Voltage References: Using a Shunt Reference as a Comparator May 12, 2015
Technical articles Understanding Voltage References: How to achieve shunt reference flexibility with series reference precision May 05, 2015
Application notes Stacking the REF50xx for High-Voltage References May 29, 2013
Application notes Low Power Input and Reference Driver Circuit for ADS8318 and ADS8319 Jun. 24, 2009

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
$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 ADS8168 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8168 successive-approximation register (SAR) analog-to-digital converter (ADC). The ADS8168EVM-PDK includes the ADS8168EVM board, the precision host interface (PHI (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance of the ADS8168 ADC
  • No external power supply required
  • Ships with PHI controller that provides a convenient interface to ADS8168EVM over USB 2.0 (or higher) for power delivery, as well as digital input/output
  • (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$199.00
Description

The ADS8900B evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8900B successive-approximation register (SAR) analog-to-digital converter (ADC), which is a fully-differential input, 20-bit, 1-MSPS device (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS8900B ADC
  • USB powered; no external power supply required
  • PHI controller provides convenient communication interface to ADS8900B ADC over a USB 2.0 (or higher) for power delivery, as (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

The ADS8910B evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8910B successive-approximation register (SAR) analog-to-digital converter (ADC). The ADS8910EVM-PDK includes the ADS8910B EVM board and precision host interface (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS8910B ADC
  • USB powered; no external power supply required
  • PHI controller provides convenient communication interface to ADS8910B ADC over a USB 2.0 (or higher) for power delivery, as (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

The ADS8920B evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8920B successive-approximation register analog-to-digital converter (SAR ADC). The ADS8920BEVM-PDK includes the ADS8920B EVM board, the PHI controller board, and (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS8920B ADC
  • No external power supply required
  • Ships with PHI EVM controller that provides a convenient interface to the EVM over USB 2.0 (or higher) for power delivery, as well as (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

The ADS9120 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS9120 successive-approximation register analog-to-digital converter (SAR ADC). The ADS9120EVM-PDK includes the ADS9120 EVM board, the PHI controller board, and accompanying (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS9120 ADC
  • No external power supply required
  • Ships with PHI EVM controller that provides a convenient interface to the EVM over USB 2.0 (or higher) for power delivery, as well as (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$499.00
Description

PLABS-SAR-EVM-PDK is an experimental platform used in conjunction with TI Precision Labs videos to gain a deeper understanding of successive approximation register (SAR) analog-to-digital converter (ADC) circuits. The evaluation module (EVM) platform contains two channels for common SAR (...)

Features
  • Intuitive setup – PCB overlay shows the schematic
  • No external power supply required
  • Includes several coupon boards with different driving amplifier RC filters to facilitate experimentation
  • Ships with PHI controller - provides convenient interface to EVM over USB 2.0 (or higher) for power delivery (...)
View details

Design tools & simulation

SIMULATION MODELS Download
SLIM173A.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLIM174A.TSC (130 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLIM175A.ZIP (39 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
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 (...)
document-generic Schematic document-generic User guide
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 (...)
document-generic Schematic document-generic User guide
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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High-Resolution, High-SNR True Raw Data Conversion Reference Design for Ultrasound CW Doppler
TIDA-01351 — The TIDA-01351 is a continuous wave (CW) signal conditioning subsystem for ultrasound imaging systems (64-, 128-, 192-, 256-channel ultrasound system). This design features 20-bit fully differential simultaneous sampling with true raw data available for processing. This TI Design consists of a (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Single-Channel, Isolated, 3-Wire Current Loop Transmitter Reference Design
TIDA-01536 — This single-channel, input-isolated, three-wire current loop transmitter reference design provides a current range of 0 mA to 20 mA while operating on a 24-V supply. The design features a precision digital-to-analog converter (DAC) with an internal reference voltage, integrated three-wire current (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
400-W Continuous, Scalable, ±2.5- to ±150-V, Programmable Ultrasound Power Supply Reference Design
TIDA-01352 — The TIDA-01352 enables modular and efficient power scaling capability by providing a solution for digitally programmable power supply for powering ultrasound transmit circuit. The design uses push-pull topology to generate high-voltage (HV) and low- (LV) or MID- voltage power supplies. The HV rails (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
20-bit, 1-MSPS Isolator Optimized Data Acquisition Reference Design Maximizing SNR and Sample Rate
TIDA-01037 — TIDA-01037 is a 20-bit, 1 MSPS isolated analog input data acquisition reference design that utilizes two different isolator devices to maximize signal chain SNR and sample rate performance. For signals requiring low jitter, such as ADC sampling clocks, TI’s ISO73xx family of low jitter devices (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
20-bit Isolated Data Acquisition Reference Design Optimizing Jitter for Max SNR and Sample Rate
TIDA-01035 — The TIDA-01035 is a 20-bit, 1 MSPS isolated analog input data acquisition reference design demonstrating how to resolve and optimize performance challenges typical of digitally isolated data acquisition systems.
  • Significantly improves high frequency AC signal chain performance (SNR  and THD) by (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High-Accuracy, Fast-Settling, ± 10V Analog Voltage Output Reference Design
TIPD192 — This circuit performs the function of producing a ±10V voltage output where both a high level of accuracy and a fast update rate are desired. This is achieved by combining the fast settling time and precision of a 16-bit unbuffered R-2R DAC (DAC8832) and the low input offset voltage and fast slew (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
20-bit, 1-MSPS, 4-Ch Small Form Factor Design for Test and Measurement Applications Reference Design
TIPD211 — End equipment such as mixed signal SOC testers, memory testers, battery testers, liquid-crystal display (LCD) testers, benchtop equipment, high-density digital cards, high-density power cards, x-Ray, MRI, and so forth require multiple, fast, simultaneous sampling channels with excellent DC and AC (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Single-Supply, Unipolar, Multiplying DAC Reference Design
TIPD157 — This multiplying DAC (MDAC) reference design outputs unipolar voltages from 0 V to 2.5 V. This design does not require dual supplies to realize a unipolar, positive output voltage. This design removes the need for a negative supply rail by applying a bias voltage to the output transimpedance stage.
document-generic Schematic document-generic User guide
Design files
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CAD/CAE symbols

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

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