Satellite sensor operates up to 125°C
1 min read
The ISL71590SEH from Intersil is a low power, radiation-hardened, current output temperature sensor able to deliver a high level of accuracy over radiation exposure, time and temperature. It is suited to remote temperature sensing in satellites and other space applications.
Advanced next generation satellite systems developers require temperature sensors that provide accuracy over the mission life of a satellite, eliminating the need for expensive radiation lot acceptance testing or spot shielding.
With the ISL71590SEH's +/-1.7°C accuracy over temperature and at most -1°C change in accuracy over low dose rate radiation, the device is able to serve satellite temperature sensing functions that support most of a system's telemetry data and calibration accuracy.
It operates over the full military temperature range of -55°C to 125°C, as well as over 50krad (Si) low dose rate and 300krad (Si) high dose rate irradiation.
The ISL71590SEH features a high impedance current output that allows the part to be insensitive to voltage drops across long wires. With a voltage between 4V and 33V on the input pin, the ISL71590SEH acts as a temperature sensitive current source with a scale factor of 1µA/K (i.e. 1µA/°C).
