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

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

(3)

(1)DNC=Donotconnect.

(2)NC=Nointernalconnection.

(3)ContactaTIsalesrepresentativeforinformation

regardingMSOP-8(DGK)packageavailability.

NOTES:

REF5010,, REF5020

REF5025, REF5030

REF5040, REF5045, REF5050

Low-Noise, Very Low Drift, Precision

VOLTAGE REFERENCE

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

• LOW NOISE: 3µV

in high-precision data acquisition systems.

• HIGH OUTPUT CURRENT: ±10mA

Each reference voltage is available in both standard-

• TEMPERATURE RANGE: –40°C to +125°C

and

high-grade

versions.

They

are

offered

in

from –40°C to +125°C.

• 16-BIT DATA ACQUISITION SYSTEMS

• ATE EQUIPMENT

REF50xx Family

• INDUSTRIAL PROCESS CONTROL

MODEL

OUTPUT VOLTAGE

• MEDICAL INSTRUMENTATION

REF5020

2.048V

• OPTICAL CONTROL SYSTEMS

REF5025

2.5V

• PRECISION INSTRUMENTATION

REF5030

3.0V

REF5040

4.096V

REF5045

4.5V

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.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright © 2007–2008, Texas Instruments Incorporated

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.