OP400 Quad Low-Offset, Low-Power Operational Amplifier

Discontinued Product. Please contact the factory for the latest replacement.


Part Number(s):OP400

DDC’s OP400 monolithic quad operational amplifier microcircuit features a greater than 100 krad (Si) typical total dose tolerance, depending upon space mission. Using DDC’s radiation-hardened RAD-PAK® packaging technology, the OP400 has an extremely low input offset voltage no less than 150 mV with a drift of under 1.2 mV/°C, guaranteed over the full military temperature range. The OP400 features low power consumption, drawing less than 725 μA per amplifier.

DDC’s patented RAD-PAK® packaging technology incorporates radiation shielding in the microcircuit package. It eliminates the need for box shielding while providing the required radiation shielding for a lifetime in orbit or space mission. In a GEO orbit, RAD-PA® provides greater than 100 krad (Si) radiation dose tolerance. This product is available with screening up to Class S.


  • RAD-PAK® technology-hardened against natural space radiation
  • Total dose hardness:
    • >100 krad (Si), depending upon space mission
  • Package:
    • 16 pin Rad-Pak® flat package
  • Low input offset voltage 150μV max
  • Low offset voltage drift
    • +1.2μV/°C max (over -55 to +125°C)
  • Low supply current (per amplifier) 725 μA max
  • High open-loop gain 5000V/mV min
  • Input bias current 3 nA Max
  • Low noise voltage density 11 nV per √HZ at 1 kHz
  • Stable with large capacitive loads 10 nF typ




OP400 Quad Low-Offset, Low-Power Operational Amplifier Data Sheet

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