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The HS-2420RH is a radiation hardened monolithic circuit consisting of a high performance operational amplifier with its output in series with an ultra-low leakage analog switch and MOSFET input unity gain amplifier. With an external hold capacitor connected to the switch output, a versatile, high performance sample-and-hold or track-andhold circuit is formed. When the switch is closed, the device behaves as an operation amplifier, and any of the standard op amp feedback networks may be connected around the device to control gain, frequency response, etc. When the switch is opened the output will remain at its last level. Performance as a sample-and-hold compares very favorably with other monolithic, hybrid, modular, and discrete circuits. Accuracy to better than 0. 01% is achievable over the temperature range. Fast acquisition is coupled with superior droop characteristics, even at high temperatures. High slew rate, wide bandwidth, and low acquisition time produce excellent dynamic characteristics. The ability to operate at gains greater than 1 frequently eliminates the need for external scaling amplifiers. The device may also be used as a versatile operational amplifier with a gated output for applications such as analog switches, peak holding circuits, etc. Specifications for Rad Hard QML devices are controlled by the Defense Logistics Agency Land and Maritime (DLA). The SMD numbers listed here must be used when ordering. Detailed Electrical Specifications for these devices are contained in SMD 5962-95669.


  • Electrically Screened to SMD # 5962-95669
  • QML Qualified per MIL-PRF-38535 Requirements
  • Maximum Acquisition Time
  • 10V Step to 0.1%: 4μs
  • 10V Step to 0.01%: 6μs
  • Maximum Drift Current: 10nA (Maximum Over Temperature)
  • TTL Compatible Control Input
  • Power Supply Rejection: ≥ 80dB
  • Total Dose: 100 krad(Si) (Max)
  • No Latch-Up


  • Data Acquisition Systems
  • D to A Deglitcher
  • Auto Zero Systems
  • Peak Detector
  • Gated Op Amp


Title language Type Format File Size Date
star HS-2420RH Datasheet Datasheet PDF 406 KB
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
Intersil Space Products Brochure Brochure PDF 3.16 MB
Intersil Commercial Lab Services Brochure PDF 364 KB
PA14004 - Export Jurisdiction Change for the Listed Intersil Products Product Advisory PDF 83 KB
PLC14003 - Product Discontinuance / Obsolescence Notification Product Life Cycle Notice PDF 179 KB
Wafer by Wafer Low Dose Rate Acceptance White Paper White Paper PDF 533 KB


printNews & Additional Resources

Type Date Sort ascending
Low Dose Rate Acceptance Testing Page Mar 26, 2020
Standard Data Package Page Mar 20, 2020
Rad Hard SMD Test Flow Page Mar 20, 2020
Rad Hard Test Reports Page Mar 20, 2020