  Radiation-tolerant, high speed, high density and low power commercial
off-the-shelf (COTS) analog-to-digital converters (ADCs) are planned to be used
in the upgrade to the Liquid Argon (LAr) calorimeter front end (FE) trigger
readout electronics. Total ionization dose (TID) and single event effect (SEE)
are two important radiation effects which need to be characterized on COTS
ADCs. In our initial TID test, Texas Instruments (TI) ADS5272 was identified to
be the top performer after screening a total 17 COTS ADCs from different
manufacturers with dynamic range and sampling rate meeting the requirements of
the FE electronics. Another interesting feature of ADS5272 is its 6.5 clock
cycles latency, which is the shortest among the 17 candidates. Based on the TID
performance, we have designed a SEE evaluation system for ADS5272, which allows
us to further assess its radiation tolerance. In this paper, we present a
detailed design of ADS5272 SEE evaluation system and show the effectiveness of
this system while evaluating ADS5272 SEE characteristics in multiple
irradiation tests. According to TID and SEE test results, ADS5272 was chosen to
be implemented in the full-size LAr Trigger Digitizer Board (LTDB)
demonstrator, which will be installed on ATLAS calorimeter during the 2014 Long
Shutdown 1 (LS1).
