Custom integrated front-end circuit for the CMS electromagneticcalorimeter
Walder, J.P.; Bussat, J.M.; Denes, P.; Mathez, H.; Pangaud, P.
Nuclear Science, IEEE Transactions on
Volume 48, Issue 6, Dec 2001 Page(s):2375 - 2379
Digital Object Identifier 10.1109/23.983271
Summary:A wide dynamic range multigain transimpedance amplifier custom
integrated circuit has been developed for the readout of avalanche
photodiode and vacuum phototriode in the CMS electromagnetic calorimeter
for the Large Hadron Collider experiment. The 92 dB input dynamic range
is divided into four ranges of 12 bits each in order to provide 40 MHz
analog sampled data to a 12 bit analog-to-digital converter. This
concept, which has been integrated in rad-hard full complementary
bipolar technology, will be described. Experimental results obtained in
the lab and under irradiation will be presented along with the test
strategy being used for mass production
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