The ISL70591SEH and ISL70592SEH ICs are radiation hardened 100µA and 1mA precision constant current sources designed for thermistor and other resistive sensor excitation applications. Their two-terminal floating type topology allows the load to be connected at the high side (+V pin), low side (-V pin), or at both the high and low sides of the current source. It is specifically designed to operate in the harsh environment of space.
The ISL70591SEHEVAL1Z and ISL70592SEHEVAL1Z evaluation boards provide a quick and easy method to evaluate the ISL70591SEH 100µA and ISL70592SEH 1mA current sources. A thorough knowledge of the ISL70591SEH/92SEH's operation is required to use this evaluation board properly. Refer to the ISL70591SEH datasheet for information about the devices' function and performance.
- Convenient test points and connections for test equipment
- Jumpers to select between a short (0Ω resistor), 100Ω resistor or 1kΩ resistor at either the input side or output side, or at both sides of the current source
- Banana jacks for:
- Connecting external loads and circuitry such as external sensors and signal conditioning circuits (for example, instrumentation amplifiers) between VS and VP and/or between VM and GND
- Sensor excitation
- Biasing network
- Low voltage references
- Ramp generators
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