Overview

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 the 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 the 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 which 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

Applications

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

Documentation

Design & Development

ISL73100SEHEV1Z Evaluation Board

ISL73100SEHEV1Z

Evaluation
Learn More

Radiation Hardened 40V Current Sense Amplifiers Evaluation Board

The ISL73100SEHEV1Z evaluation board is designed to evaluate the performance of the ISL70100SEH and ISL73100SEH radiation hardened 40V current sense...

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    DLA SMD
    Moisture Sensitivity Level (MSL)
    Buy / Sample
    Part Number
    ISL70100SEHF/PROTO
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    Samples Available
    		 CFP Tray 1 Not Applicable Get Samples,
    ISL70100SEHVF
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    spa
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    		CFP Tray 25 5962R2021201VXC Not Applicable
    ISL70100SEHVX
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    		100 5962R2021201V9A
    ISL70100SEHX/SAMPLE
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    		Die Waffle Pack 10 Not Applicable
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