ADS8326

REF5040

REF

V

OUT

GND

+IN

-

IN

V

IN

+5V

OPA365

Input

Signal

0V to 4V

+5V

+5V

V

DD

GND

C

BYPASS

1 F

m

R

1

50W

C

1

1.2nF

C

2

22 F

m

1

2

3

4

8

7

6

5

DNC

(1)

NC

(2)

TRIM/NR

DNC

(1)

V

IN

TEMP

GND

V

OUT

REF50xx

SO-8, MSOP-8

(1) DNC = Do not connect.

(2) NC = No internal connection.

NOTES:

REF5010, REF5020

REF5025, REF5030

REF5040, REF5045, REF5050

www.ti.com

SBOS410E – JUNE 2007 – REVISED JUNE 2010

Low-Noise, Very Low Drift, Precision

VOLTAGE REFERENCE

Check for Samples: REF5010, REF5020, REF5025, REF5030, REF5040, REF5045, REF5050

1

FEATURES

DESCRIPTION

2

•

LOW TEMPERATURE DRIFT:

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

high precision voltage references. These references

–

High-Grade: 3ppm/°C (max)

are capable of both sinking and sourcing, and are

–

Standard-Grade: 8ppm/°C (max)

very robust with regard to line and load changes.

•

HIGH ACCURACY:

Excellent

temperature

drift

(3ppm/°C)

and

high

–

High-Grade: 0.05% (max)

accuracy (0.05%) are achieved using proprietary

–

Standard-Grade: 0.1% (max)

design techniques. These features, combined with

very low noise, make the REF50xx family ideal for

•

use in high-precision data acquisition systems.

•

EXCELLENT LONG-TERM STABILITY:

Each reference voltage is available in both standard-

–

5ppm/1000hr (typ) after 1000 hours

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

•

HIGH OUTPUT CURRENT: ±10mA

and SO-8 packages, and are specified from –40°C to

•

TEMPERATURE RANGE: –40°C to +125°C

+125°C.

APPLICATIONS

REF50xx Family

•

16-BIT DATA ACQUISITION SYSTEMS

MODEL

OUTPUT VOLTAGE

•

ATE EQUIPMENT

REF5020

2.048V

•

INDUSTRIAL PROCESS CONTROL

REF5025

2.5V

REF5030

3.0V

•

MEDICAL INSTRUMENTATION

REF5040

4.096V

•

OPTICAL CONTROL SYSTEMS

REF5045

4.5V

•

PRECISION INSTRUMENTATION

REF5050

5.0V

REF5010

10.0V

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 © 2007–2010, 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.