CATIA APD readout ASIC for the CMS phase 2 ECAL electronics upgrade

The CMS electromagnetic calorimeter (ECAL) will be upgraded to maintain detector performance in the challenging environment of the High Luminosity LHC. The front-end readout electronics of the ECAL barrel will be replaced, while maintaining the existing crystals and avalanche photodiodes (APDs). Moreover, the upgrade will optimize the timing resolution of the system. The new front-end electronics consists of two cascading ASICs a fast, dual gain trans-impedance amplifier (CATIA) and a dual ADC, designed in 130 nm and 65 nm CMOS, respectively. The latest test beam and laboratory test results of CATIA coupled with an ADC will be presented.