TY - GEN
T1 - Low noise front end ASIC with current mode active cooled termination for the upgrade of the LHCb calorimeter
AU - Gascon, D.
AU - Picatoste, E.
AU - Abellan, C.
AU - Duarte, O.
AU - Garrido, Ll
AU - Grauges, E.
AU - Lefrançois, J.
AU - Machefert, F.
AU - Vilasis, X.
PY - 2011
Y1 - 2011
N2 - An integrated circuit for the Upgrade of the LHCb Calorimeter front end electronics is presented. The circuit is based on a current mode input stage followed by two fully differential interleaved channels with a switched integrator and a track and hold. The input stage employs a novel electronically cooled input termination scheme to achieve the stringent noise requirements. Compared to previous designs, its novelty relies in the use of two current feedback loops to decrease and control the input impedance of a common base stage. Two prototypes in AMS SiGe BiCMOS 0.35um technology have been designed and tested. Key measurements have been performed. Reflection coefficient is smaller than 0.5% for the full dynamic range, which is 12 bits. Relative linearity error is below 1 %. Output noise is about 1 LSB after aplying correlated double sampling.
AB - An integrated circuit for the Upgrade of the LHCb Calorimeter front end electronics is presented. The circuit is based on a current mode input stage followed by two fully differential interleaved channels with a switched integrator and a track and hold. The input stage employs a novel electronically cooled input termination scheme to achieve the stringent noise requirements. Compared to previous designs, its novelty relies in the use of two current feedback loops to decrease and control the input impedance of a common base stage. Two prototypes in AMS SiGe BiCMOS 0.35um technology have been designed and tested. Key measurements have been performed. Reflection coefficient is smaller than 0.5% for the full dynamic range, which is 12 bits. Relative linearity error is below 1 %. Output noise is about 1 LSB after aplying correlated double sampling.
UR - http://www.scopus.com/inward/record.url?scp=84858673097&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2011.6154346
DO - 10.1109/NSSMIC.2011.6154346
M3 - Conference contribution
AN - SCOPUS:84858673097
SN - 9781467301183
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 1445
EP - 1452
BT - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
Y2 - 23 October 2011 through 29 October 2011
ER -