1

Radiation Hardened Ultra Low Noise, Precision Voltage

Reference

ISL71090SEH25

The ISL71090SEH25 is an ultra low noise, high DC accuracy

precision voltage reference with a wide input voltage range

from 4V to 30V. The ISL71090SEH25 uses the Intersil

noise with an accuracy over temperature and radiation of

0.15%.

The ISL71090SEH25 offers a 2.5V output voltage with

10ppm/°C temperature coefficient and also provides

excellent line and load regulation. The device is offered in an

8 Ld Flatpack package.

The ISL71090SEH25 is ideal for high-end instrumentation,

data acquisition and applications requiring high DC precision

where low noise performance is critical.

Applications

• RH voltage regulators precision outputs

• Precision voltage sources for data acquisition system for

space applications

• Strain and pressure gauge for space applications

Features

• Reference output voltage . . . . . . . . . . . . . . . . . . .2.5V±0.05%

• Accuracy over temperature and radiation . . . . . . . . . .±0.15%

• Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 930µA (Typ)

• Tempco (box method) . . . . . . . . . . . . . . . . . . . 10ppm/°C Max

• Output current capability . . . . . . . . . . . . . . . . . . . . . . . . 20mA

• Line regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8ppm/V

• Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5ppm/mA

• Operating temperature range. . . . . . . . . . . .-55°C to +125°C

• Radiation environment

- High dose rate (50-300rad(Si)/s) . . . . . . . . . . . 100krad(Si)

- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . . 100krad(Si)*

*Product capability established by initial characterization. The

“EH” version is acceptance tested on a wafer by wafer basis to

50krad(Si) at low dose rate

• Electrically screened to SMD 5962-13211

Related Literature

• AN1847, “ISL71090SEH25 Evaluation Board User’s Guide”

• AN1848, “SEE Testing of the ISL71090SEH25”

• AN1849, “Radiation Report of the ISL71090SEH25”

FIGURE 1. ISL71090SEH25 TYPICAL APPLICATION DIAGRAM

0.1µF

VEE

VDD

REFIN

VDD

BIPOFF

VEE

DACOUT

GND

VIN

VREF

1µF

D0

HS-565BRH

1

2

3

4

6

8

7

5

ISL71090SEH25

D12

1.1k

C

NOTE: Select C to minimize

settling time.

2.497

2.498

2.499

2.500

2.501

2.502

2.503

-55

-5

45

95

145

TEMPERATURE (°C)

2.5V -0.1%

2.5V +0.1%

UNIT2

UNIT3

UNIT4

UNIT5

UNIT1

June 6, 2013

FN8451.0

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.