Features
- Reference output voltage: 4.096V ±0.05%
- Accuracy over temperature: ±0.15%
- Accuracy over radiation: ±0.25%
- Output voltage noise: 6.2μVP-P typical (0.1Hz to 10Hz)
- Supply current: 300μA (Typ)
- VOS temperature coefficient: 6ppm/°C maximum
- Output current capability: 10mA /-5mA
- Line regulation: 5ppm/V maximum
- Load regulation (sourcing): 20ppm/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)
- 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.
- SEL/SEB free (VCC = 36V): 86MeV•cm2/mg
- Electrically screened to SMD 5962-14208
Description
The ISL71091SEH40 is an ultra-low noise, high DC accuracy precision voltage reference with a wide input voltage range from 6.0V to 30V. It uses Renesas' advanced bipolar technology to achieve 6.2μVP-P 0.1Hz to 10Hz noise with an initial voltage accuracy of 0.05%. The ISL71091SEH40 offers a 4.096V output voltage option with 6ppm/°C temperature coefficient and provides excellent line and load regulation. The device is offered in an 8 Ld flatpack package. The ISL71091SEH40 is ideal for high-end instrumentation, data acquisition, and processing applications requiring high DC precision where low noise performance is critical.
Parameters
| Attributes | Value |
|---|---|
| Rating | Space |
| Line Regulation (ppm/V) | 5 |
| Reference Output Voltage (V) | 4.096 |
| Supply Voltage (min) (V) | 6 - 6 |
| Supply Voltage (max) (V) | 30 - 30 |
| Temp. Range (°C) | -40 to +125°C, -55 to +125°C |
| TID HDR (krad(Si)) | 100 |
| TID LDR (krad(Si)) | 50, 100 |
| DSEE (MeV·cm2/mg) | 86 |
| Flow | RH Hermetic |
| Qualification Level | Class V, EM |
| Die Sale Availability? | Yes |
| PROTO Availability? | Yes |
Applications
- Precision voltage sources for data acquisition systems in space applications
- Strain and pressure gauges for space applications
- Radiation hardened PWM requiring precision outputs
Renesas Boards & Kits
Ultra-Low Noise, High-Precision Rad Hard Voltage Reference Evaluation Board
The ISL71091SEH40EV1Z evaluation board is designed to measure the performance of the radiation hardened ultra-low noise, high-precision ISL71091SEH40 voltage reference. The ISL71091SEH40 is an ultra-low noise, high DC accuracy precision voltage reference with a wide input voltage range from 6.0V... Read More
Knowledge Base
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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
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