A VME module for a fast readout of the monolithics analog front-end chips

A single-slot VME card has been developed to digitalize the multiplexed analogue signals coining out from the analog front-end chips (VA32HDR14.2) used in the EXOTIC experiment. The module has 8 differential channels each one sample by 50 MHz 12-bit ADCs. Other features of the ADC card are the use of a sliding-scale technique to improve the differential linearity, the pedestal individually subtracted for each chip channel, a zero suppression with individual threshold, a multi event storage capability (up to 256) , a programmable number of chips connected in chain, 8 trigger levels to manage different operations and a Test-Mode functionality to manage and control the VA32HDR14.2 chip.