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A scientific study of the problems of digital engineering for space flight systems,
with a view to their practical solution.


21020 Papers

 

belasic.pdf EVALUATION OF THE DIGITAL SIGNAL PROCESSOR TSC21020F FROM THE MANUFACTURER TEMIC SEMICONDUCTORS MHS FOR SPACE APPLICATIONS
Marielle BELASIC, Françoise BEZERRA, Guy ROUXEL

Abstract
An evaluation of the Digital Signal Processor TSC21020F from the manufacturer TEMIC Semiconductors MHS for space applications has been performed. This evaluation has consisted of radiation tests, destructive tests, electrical characterization and endurance tests, in order to assess the specific failure modes and the reliability of this product in the space environment.

The different tests have shown :

  • preservation of functionality, and parameters within specification limits, until 100krad (data got during development phase January 1998),
  • no latch-up observed until 72MeV.cm 2 /mg, and an improvement of a factor greater than 1200 in the SEU occurrence period in comparison with the standard ADSP21020 rev3.0 from Analog Devices,
  • no major defect during the construction analysis,
  • good functionality of the devices, and all static and dynamic parameters within specification limits, from power supply voltage 4.5V to 5.5V (20MHz) on the whole temperature range,
  • - no reliability problem during endurance testing.

So, these positive results have confirmed the ability of the TSC21020F to be used in space applications.


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