A 32 channels charge integrating ADC based on digital signal integration

A digital charge integrator with programmable gate width and range has been designed for use in the KLOE drift chamber front-end chain. The system has a resolution of 9 bits ranging from 600fC/count up to ≈76≈76 pC and integration time ranging from 100 ns to about 13μs. Thirty-two channels have been packaged in a single VME 9U board.