Load Current (mA)

0

0.04

0.08

0.12

0.16

0.2

0.24

0.28

0.32

0.36

0.4

5

10

0

+25°C

-40°C

+125°C

D001

10

10

Input Signal

124

1 nF

ADS1287

VIN

REF

CIN

1 µF

COUT

10 µF

±

+

REF34xx-EP

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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.

REF3425-EP, REF3430-EP, REF3433-EP, REF3440-EP

SBAS942A – DECEMBER 2018 – REVISED MARCH 2019

REF34xx-EP low-drift, low-power, small-footprint series voltage reference

1

1 Features

1

•

Initial accuracy: ±0.05% (maximum)

•

Temperature coefficient : 10 ppm/°C (maximum)

•

Output current: ±10 mA

•

Low quiescent current: 95 µA (maximum)

•

Wide input voltage: 12 V

•

•

Small footprint 6-pin SOT-23 package

•

Supports defense, aerospace, and medical

applications:

–

Controlled baseline

–

One assembly/test site

–

One fabrication site

–

Available extended (–55°C to 125°C)

temperature range

–

Extended product life cycle

–

Extended product-change notification

–

Product traceability

2 Applications

•

Precision data acquisition systems

•

PLC analog I/O modules

•

Field transmitters

•

Industrial instrumentation

•

Test equipment

•

Power monitoring

3 Description

The REF34xx-EP device is a low temperature drift

(10

ppm/°C),

low-power,

high-precision

CMOS

voltage reference, featuring ±0.05% initial accuracy,

low operating current with power consumption less

than 95 µA. This device also offers very low output

maintain high signal integrity with high-resolution data

converters in noise critical systems. With a small

SOT-23

package,

REF34xx-EP

offers

enhanced

specifications

and

pin-to-pin

replacement

for

MAX607x and ADR34xx. The REF34xx-EP family is

compatible to most ADC and DAC.

The small size and low operating current of the

devices (95 µA) can benefit portable and battery-

powered applications.

REF34xx-EP is specified for the wide temperature

range of –55°C to 125°C. Contact the TI sales

representative for additional voltage options.

Device Information(1)

PART NAME

PACKAGE

BODY SIZE (NOM)

REF3425-EP

SOT-23 (6)

2.90 mm × 1.60 mm

REF3430-EP

REF3433-EP

REF3440-EP

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

Dropout vs Current Load Over Temperature