The ISL70100SEH is a radiation hardened 40V current sense amplifier built on the Renesas proprietary PR40 SOI process. This device has a wide power supply range of 2.7V to 40V. The input common-mode voltage is independent of the supply voltage and extends from -0.3V to 40.0V, making them ideal to use in both high-side and low-side applications.

The ISL70100SEH is a transconductance amplifier that monitors current using an external sense resistor and outputs a current proportional to the sensed voltage. The overall voltage gain is adjustable with a single resistor from the output to ground.

This amplifier has an extremely low offset voltage and input bias currents, making it ideal for precision sensing applications. It has a minimum bandwidth of 500kHz with a slew rate of 500µA/µs that makes it useful for current feedback in telemetry applications. When the part is powered down (V+ = V- = 0V), the sense pins (RS+, RS-) are high impedance to avoid loading the monitored circuit.

The part is available in a hermetically sealed 10 Ld ceramic flat-pack package or die form and operates across the full-range military temperature of -55°C to +125°C.


  • Power supply range: 2.7V to 40V
  • Input common-mode range: -0.3V to 40V
  • Transconductance: 2µA/mV (typical)
    • ±1% accuracy (TA = 25°C)
    • ±1.5% accuracy (TA = -55°C, 125°C)
  • Voltage offset: 10µV (typical), V+ = 12V
  • Adjustable gain with a single resistor
  • Radiation acceptance testing-
    • HDR (50-300rad(Si)/s): 100krad(Si) 
    • LDR (<10mrad(Si)/s): 75krad(Si)
  • SEE hardness (see SEE report for details)
    • No SEB (V+ = 35V): 86.4MeV•cm2/mg
    • No SEB (V+ = 42V): 43.0MeV•cm2/mg
  • Electrically Screened to SMD 5962-20212


  • High-side or low-side current sensing
  • Battery monitoring
  • Power management
  • Motor control
  • Command, telemetry, and control systems

Product Options

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Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL70100SEH, ISL73100SEH Datasheet Datasheet PDF 1.53 MB
Application Notes & White Papers
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
Current Sensing in Space Applications Brochure PDF 285 KB
ISL70100SEH, ISL73100SEH Total Dose Test Report Report PDF 684 KB
ISL70100SEH and ISL73100SEH SEE Test Report Report PDF 1.11 MB
Intersil Space Products Brochure Brochure PDF 5.58 MB
SMD 5962-20212 (ISL70100SEH, ISL73100SEH) Other 0 KB