The ISL71091SEH33 is an ultra low noise, high DC accuracy
precision voltage reference with a wide input voltage range
from 4.6V to 30V. It uses Intersil’s advanced bipolar technology
to achieve 5.2µVP-P 0.1Hz to 10Hz noise with an initial voltage
accuracy of 0.05%.
The ISL71091SEH33 offers a 3.3V 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 ISL71091SEH33 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 . . . . . . . . . . . . . . . . . . 3.3V ±0.05%
• Accuracy over temperature . . . . . . . . . . . . . . . . . . . . . ±0.15%
• Accuracy over radiation . . . . . . . . . . . . . . . . . . . . . . . . ±0.25%
• Output voltage noise . . . . . . 5.2µVP-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) . . . . . . . . . 25ppm/mA maximum
• 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)*
- SEL/SEB free (VCC = 36V) . . . . . . . . . . . . 86MeV•cm2/mg

Applications
• Precision voltage sources for data acquisition system for
space applications
• Strain and pressure gauge for space applications
• Radiation hardened PWM requiring precision outputs