A fast ADC system for silicon, μstrips readout

A new fast ADC module has been designed. It is part of a large readout system for a high resolution vertex detector consisting of 12 silicon microstrip planes with more than 8000 channels. The module employes a set of monolithic gatéd integrators on input (LeCroy MIQ 401) multiplexed on a single 8 bit FADC (Thompson EFX8308). A built-in preprocessing, performed through look up tables, accomplishes equalization and reduction of the data and makes high level trigger feasible. As an additional feature, fast histogramming of all the channels in parallel has been made possible with an internal memory. Special care has been paid to realize a low cost and low power consumption system.