The ISL71590SEH and ISL73590SEH are temperature-to-current transducers possessing two terminals. They have a high impedance current output that allows them to be insensitive to voltage drops across long lines. When provided a differential voltage between 4V and 33V, the devices act as constant current regulators that generate a current equal to 1μA/Kelvin (K). These devices are specified across the -55°C to +125°C temperature range and with ±1. 7°C accuracy without the need of additional circuitry, and also capable of operating up to +150°C. With power requirements as low as 1. 5mW (5V at +25°C), they are an ideal choice for remote sensing applications as any well-insulated twisted pair cable will allow for proper operation. They can be used in several additional applications including temperature compensation networks, flow rate analysis, anemometry, and biasing proportional to absolute temperature. The high output impedance (>10MΩ) leaves plenty of room for variations in the power supply voltage. The ISL7x590SEH is electrically durable as it can withstand a forward operating voltage of 33V over the full temperature range both under and without ion beam radiation and a reverse voltage of -40V. The ISL71590SEH and ISL73590SEH are available in 2 Ld flatpacks and die forms. All material applies to both parts except for TID assurance test levels.


  • 50krad(Si) low dose rate (ELDRS) shift: < 1°C
  • Linear output current: 1μA/K
  • Wide power supply input range (V+ to V-) : 4V to 33V
  • Low power consumption: 1.5mW at 5V
  • High output impedance provides excellent rejection to variations in the supply line
  • Additional linearization circuitry is not needed for operation
  • Operating temperature range: -55°C to +150°C
  • QML qualified per MIL-PRF-38535 requirements
  • Radiation environment
    • SEL/SEB LETTH: 86.4MeV•cm2/mg
    • Total dose, high dose rate: 300krad(Si)*
    • Total dose, low dose rate: 50krad(Si)
      *Applies to the ISL71590SEH only.
  • Electrically screened to SMD# 5962-13215

Product Options

Part Number Part Status Pkg. Type Carrier Type DLA SMD Buy Sample
Active CFP Tray
Active CFP Tray 5962L1321502VXC
Active DIE 5962L1321502VXC
Active DIE 5962L1321502VXC


Title language Type Format File Size Date
Datasheets & Errata
ISL71590SEH, ISL73590SEH Datasheet Datasheet PDF 602 KB
Application Notes & White Papers
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
Wafer by Wafer Low Dose Rate Acceptance White Paper White Paper PDF 533 KB
PCN18008 - Part Marking Change for the Listed QML Products Product Change Notice PDF 846 KB
Intersil Space Products Brochure Brochure PDF 3.14 MB
Standard Microcircuit Drawing 5962-13215 (ISL71590SEH, ISL73590SEH) Other 0 KB
ISL71590SEH Total Dose Test Report Report PDF 315 KB
ISL71590SEH Neutron Test Report Report PDF 174 KB
ISL71590SEH, ISL73590SEH SEE Test Report Report PDF 197 KB

News & Additional Resources

Type Date Sort ascending
Low Dose Rate Acceptance Testing Page Mar 25, 2020
Standard Data Package Page Mar 19, 2020
Rad Hard SMD Test Flow Page Mar 19, 2020
Rad Hard Test Reports Page Mar 19, 2020