Overview
Description
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 *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 5962-14208
Comparison
Applications
Design & Development
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Evaluation
ISL71091SEH33EV1Z
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Ultra-Low Noise, High Precision Rad Hard Voltage Reference Evaluation Board
The ISL71091SEH33EV1Z evaluation board is designed to measure the performance of the radiation hardened, ultra-low noise, high precision ISL71091SEH voltage reference family. The ISL71091SEH33 is an ultra-low noise, high DC accuracy precision voltage reference with a wide input voltage range...
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FAQs
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Is it possible to use the ISL71091SEH without a compensation capacitor?
It is possible to use these voltage references without a compensation capacitor if the output capacitance is under 100pF. However, a compensation capacitor is highly recommended to mitigate SEE effects. Please see AN1938 for the full SEE test report.
Jul 10, 2025