7872 14-Bit A/D Converter

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


Part Number(s):7872

DDC’s 7872 high-speed 14-bit ADC microcircuit features a greater than 100 krad (Si) total dose tolerance; depending upon orbit. The 7872 consists of a track/hold amplifier, successive-approximation ADC, 3V buried Zener reference and versatile interface logic. It features a self-contained, laser- trimmed internal clock, so no external clock timing components are required. To achieve the minimum noise possible, the on-chip clock may be overridden to synchronize the device operation to the digital system. The 7872 is a serial output device. It is capable of interfacing to all modern microprocessors and digital signal processors. The 7872 operates from ±5V power supplies, accepts bipolar input signals of ±3V and is able to convert full power signals up to 41.5 kHz. It is also fully specified for dynamic performance parameters including distortion and signal-to-noise ratio.

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-PAK® provides greater than 100 krad (Si) radiation dose tolerance. This product is available with screening up to DDC’s self-defined Class S.


  • 14-bit resolution and accuracy
  • Total dose hardness:
    • >100 krad (Si), depending upon space mission
  • Single event effects:
    • SEL > 104 MeV/mg/cm2
    • SEUTH = 1.4 MeV/mg/cm2
    • SEUSat = 1E-3 cm2/Device
  • Package:
    • 16 pin RAD-PAK® flat package
    • 16 pin RAD-PAK® dual-in-line package
  • Fast Conversion Times: 10 μs
  • Low 50 mW typical power consumption
  • High speed LC2MOS technology
    • Analog input range of ±3V
    • 83 KSPS throughput rate
    • Operates with +5V/-5V power supplies
    • 80 dB SNR at 10 kHz input frequency
    • Serial output




7872 14-Bit A/D Converter Data Sheet

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