COTS ADC & DAC selection and qualification for the GLAST mission

Author

Ampe, J. ; Thai, V. ; Buchner, S. ; Kniffin, S. ; Johnson, W.N.

Author_Institution

Praxis Inc., Alexandria, VA, USA

fYear

2005

fDate

11-15 July 2005

Firstpage

79

Lastpage

84

Abstract

Low-voltage low-power ADCs were radiation tested for selection to use on calorimeter instrument of the gamma-ray large area space telescope (GLAST). The GLAST instrument detects the most energetic photons, gamma rays, and pinpoint their source direction and energy. The GLAST instrument has a low-Earth orbit with an expected lifetime total-dose radiation exposure less than 5 krad. Both the Maxim MAX145 and MAX1241 CMOS ADCs were tested to be single event latchup (SEL) immune to an LET of 60 Mev/mg/cm². The MAX145 is used on the GLAST instrument. A companion device MAX5121 was selected as the flight DAC that also did not show SEL to 60 MeV/mg/cm². In presenting the data from all the ADCs and DACs tested, and explaining our test and qualification process, we hope to aide other designers with this difficult process.

Keywords

CMOS digital integrated circuits; analogue-digital conversion; digital-analogue conversion; integrated circuit testing; low-power electronics; radiation effects; space vehicle electronics; COTS ADC selection; COTS DAC selection; GLAST mission; MAX1241 CMOS ADC system; MAX5121 device; Maxim MAX145 CMOS ADC system; analog-digital conversion; calorimeter instrument; digital-analog conversion; gamma-ray large area space telescope; linear energy transfer; low Earth orbit GLAST instrument; low-voltage low-power ADC; radiation testing; semiconductor device radiation effects; single event latchup; total-dose radiation exposure; Digital-analog conversion; Gamma ray detection; Gamma ray detectors; Gamma rays; Instruments; Position measurement; Pulse measurements; Qualifications; Telescopes; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Radiation Effects Data Workshop, 2005. IEEE

Print_ISBN

0-7803-9367-8

Type

conf

DOI

10.1109/REDW.2005.1532670

Filename

1532670