The ISL71091SEH20 is an ultra low noise, high DC accuracy

precision voltage reference with a wide input voltage range

from 4.2V to 30V. It uses Intersil’s advanced bipolar technology

to achieve 3.8µVP-P 0.1Hz to 10Hz noise with an initial voltage

accuracy of 0.05.

The ISL71091SEH20 offers a 2.048V output voltage option

with 6ppm/°C temperature coefficient and also provides

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

8 Ld flatpack package.

The ISL71091SEH20 is ideal for high-end instrumentation,

data acquisition and processing applications requiring high DC

precision where low noise performance is critical.

Features

• Reference output voltage . . . . . . . . . . . . . . . .2.048V ±0.05

• Accuracy over temperature . . . . . . . . . . . . . . . . . . . . . ±0.15

• Accuracy over radiation . . . . . . . . . . . . . . . . . . . . . . . . ±0.25

• Output voltage noise . . . . . . 3.8µVP-P typical (0.1Hz to 10Hz)

• Supply current . . . . . . . . . . . . . . . . . . . . . . . . . 300µA (typical)

• VOS temperature coefficient . . . . . . . . . . 6ppm/°C maximum

• Output current capability . . . . . . . . . . . . . . . . . . . 10mA/-5mA

• Line regulation . . . . . . . . . . . . . . . . . . . . . . 5ppm/V maximum

• Load regulation (Sourcing) . . . . . . . . . 40ppm/mA maximum

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

• Radiation environment

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

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

- SEL/SEB free (VCC = 36V) . . . . . . . . . . . . 86MeV•cm2/mg

Applications

• Precision voltage sources for data acquisition system for

space application

• Strain and pressure gauge for space applications

• Radiation hardened PWM requiring precision outputs