Speaker
Mr
Ludovic Raux
(LAL Orsay)
Description
SPIROC is a dedicated very front-end electronics for an ILC prototype hadronic
calorimeter with SiPM readout. It has been realized in 0.35m SiGe technology. It
has been developed to match the requirements of large dynamic range, low
noise, low consumption, high precision and large number of readout channels
needed.
SPIROC is an auto-triggered, bi-gain, 36-channel ASIC which allows to measure
on each channel the charge from one photoelectron to 2000 and the time with
a 100ps accurate TDC.
An analog memory array with a depth of 16 for each is used to store the time
information and the charge measurement. A 12-bit Wilkinson ADC has been
embedded to digitize the analog memory contents (time and charge on 2
gains). The data are then stored in a 4kbytes RAM. A very complex digital part
has been integrated to manage all theses features and to transfer the data to
the DAQ.
Primary author
Mr
Ludovic Raux
(LAL Orsay)
Co-authors
Mr
Christophe de La Taille
(LAL Orsay)
Mr
Frédéric Dulucq
(LAL Orsay)
Mrs
Gisèle Martin-Chassard
(LAL Orsay)
Mr
Julien Fleury
(LAL Orsay)
Mr
Michel Bouchel
(LAL Orsay)
