REF50xx-EP - Low-Noise, Very Low Drift, Precision Voltage Reference - Features - Applications - Description

Oct 12, 2026

REF50xx-EP 是一组低噪声、超低漂移、高精度的电压基准器件，支持灌电与拉电，并能在电源线与负载变化下保持稳健性能。其凭借专有设计实现卓越的温漂与高准确度，配合极低噪声，适合高精度数据采集系统等应用。器件提供 SOIC-8 封装规格，工作温度范围为 -55°C 至 125°C，并面向军事温区使用。

LanguageEnglish

CategoryTechnology

FormatPDF

Pages30

Reading Time1 h 16 min

AccessFree to download

1 Features

2 Applications

3 Description

4 Revision History

5 Pin Configuration and Functions

6 Specifications

6.1 Absolute Maximum Ratings

6.2 ESD Ratings

6.3 Recommended Operating Conditions

6.4 Thermal Information

6.5 Electrical Characteristics: Per Device

6.6 Electrical Characteristics: All Devices

6.7 Typical Characteristics

7 Detailed Description

7.1 Overview

7.2 Functional Block Diagram

7.3 Feature Description

7.4 Device Functional Modes

8 Application and Implementation

8.1 Application Information

8.2 Typical Applications

8.3 System Example

9 Power Supply Recommendations

9.1 Basic Connections

9.2 Low Dropout Voltage

10 Layout

10.1 Layout Guidelines

10.2 Layout Example

10.3 Power Dissipation

11 Device and Documentation Support

11.1 Documentation Support

11.2 Related Links

11.3 Community Resources

11.4 Trademarks

11.5 Electrostatic Discharge Caution

11.6 Glossary

12 Mechanical, Packaging, and Orderable Information

REF50xx-EP Low-Noise, Very Low Drift, Precision Voltage Reference 1 Features • Low Temperature Drift: 5 ppm/°C (Maximum) • High Accuracy: 0.08%(Maximum) • Low Noise: 3 μVPP/V • High Output Current: ± 10 mA • Available in Military (–55°C to 125°C) Temperature Range (1) • Extended Product Life Cycle • Extended Product-Change Notification • Product Traceability 2 Applications • 16-Bit Data Acquisition Systems • ATE Equipment • Industrial Process Control • Medical Instrumentation • Optical Control Systems • Precision Instrumentation • Controlled Baseline • One Assembly/Test Site • One Fabrication Site 3 Description The REF50xx is a family of low-noise, very low-drift, very high precision voltage references. These references are capable of both sinking and sourcing, and are very robust with regard to line and load changes. Excellent temperature drift and high accuracy 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. They are offered in SOIC-8 packages, and are specified from –55°C to 125°C. Device Information(1) | PART NUMBER | PACKAGE | BODY SIZE (NOM) | | --- | --- | --- | | REF50xx-EP | SOIC (8) | 4.90 mm × 3.91 mm | (1) For all available packages, see the orderable addendum atthe end of the data sheet. (1) Custom temperature ranges available Simplified Schematic +5 V +5 V An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. REF5020-EP, REF5025-EP, REF5040-EP, REF5050-EP SBOS471B –APRIL 2010–REVISED JUNE 2015 [www.ti.com](www.ti.com) | Table of Contents | | | --- | --- | | 1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 3
6.1 Absolute Maximum Ratings ..................................... 3
6.2 ESD Ratings.............................................................. 3
6.3 Recommended Operating Conditions ....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics: Per Device ....................... 4
6.6 Electrical Characteristics: All Devices ....................... 5
6.7 Typical Characteristics .............................................. 6
7 Detailed Description ............................................ 10
7.1 Overview ................................................................. 10
7.2 Functional Block Diagram ....................................... 10
7.3 Feature Description ................................................. 10
7.4 Device Functional Modes........................................ 12
8 Application and Implementation ........................ 13 | 8.1 Application Information............................................ 13
8.2 Typical Applications ............................................... 13
8.3 System Example ..................................................... 17
9 Power Supply Recommendations ...................... 19
9.1 Basic Connections .................................................. 19
9.2 Low Dropout Voltage .............................................. 19
10 Layout................................................................... 19
10.1 Layout Guidelines ................................................. 19
10.2 Layout Example .................................................... 20
10.3 Power

FAQs

REF50xx-EP 的主要性能指标有哪些？

主要包括低温度漂移（最大 5 ppm/°C）、高准确度（最大 0.08%）、低噪声（3 μVPP/V）以及较高输出电流（±10 mA）。

REF50xx-EP 适用于哪些应用？

适用于 16-bit 数据采集系统、ATE 设备、工业过程控制、医疗仪器、光学控制系统、精密仪器等，同时也可用于受控基准。

REF50xx-EP 的封装与工作温度范围是什么？

提供 SOIC-8 封装，并在 -55°C 到 125°C 的温度范围内进行规格定义，支持军事温区使用。

Oct 12, 2026

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