A BICMOS discriminator interface for the SPD
L. Garrido, M. Roselló, David Gascon, Sebastià A. Bota, Angel Dieguez · CERN Document Server (European Organization for Nuclear Research) · 2000
A prototype chip for the analogue readout of the SPD in the LHCb Calorimeter is presented.The chip has been designed using the 0.8µm-BiCMOS technology of AMS and optimised for minimum size and maximum performance at the required frequency of operation in LHC experiments.It consists of a dual structure formed by two integrators, two track and hold circuits, two substractors, two comparators and a multiplexer.The die size occupied by one discriminator circuit is approximately 1720 µm x 330 µm.