1

FEATURES

DESCRIPTION

APPLICATIONS

ADS8326

REF5040

REF

V

OUT

GND

+IN

-

IN

V

IN

+5V

OPA365

Input

Signal

0Vto4V

5V

5V

V

DD

GND

C

1 F

m

BYPASS

R

50 W

1

C

1.2nF

1

C

22 F

m

2

1

2

3

4

8

7

6

5

DNC

NC

TRIM/NR

DNC

V

IN

TEMP

GND

V

OUT

SO-8(D)PACKAGE

(TOPVIEW)

DNC=Donotconnect

NC=Nointernalconnection

REF5020-Q1, REF5025-Q1, REF5030-Q1

REF5040-Q1, REF5045-Q1, REF5050-Q1

LOW NOISE, VERY LOW DRIFT, PRECISION VOLTAGE REFERENCE

2

• Qualified for Automotive Applications

The REF50xx is a family of low-noise, low-drift, very

high precision voltage references. These references

• Low Temperature Drift

are capable of both sinking and sourcing, and are

–

High Grade: 3 ppm/°C (max)

very robust with regard to line and load changes.

–

Standard Grade: 8 ppm/°C (max)

Excellent temperature drift (3 ppm/°C) and high

• High Accuracy

accuracy (0.05%) are achieved using proprietary

–

High Grade: 0.05% (max)

design techniques. These features combined with

very low noise make the REF50xx family ideal for use

–

Standard Grade: 0.1% (max)

in high-precision data acquisition systems.

• Low Noise: 3 µV

Each reference voltage is available in both standard-

• High Output Current: ±10 mA

and high-grade versions. They are offered in SO-8

• Temperature Range: –40°C to 125°C

packages and are specified from –40°C to 125°C.

REF50xx Family

• 16-Bit Data Acquisition Systems

MODEL

OUTPUT VOLTAGE

• ATE Equipment

REF5020

2.048 V

• Industrial Process Control

REF5025

2.5 V

• Medical Instrumentation

REF5030

3 V

• Optical Control Systems

REF5040

4.096 V

• Precision Instrumentation

REF5045

4.5 V

REF5050

5 V

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.