Flex Cable Readout unit Si Sensor 256 analog lines Interconnect board NCC signal packaging concept PA board -This is the calorimeter – all pads in the subtower are contributing to signal; -Noise budget is set by physics: better is an enemy of the good;
Requirements Tower / individual readout Minimal signal – 10 (1) mips Noise (48000e / 15000e) Speed – 300 ns (peak time 150ns) Mip/bit /12 Individual channel / summator Maximal signal 40pC Consumption Protection Switching Open loop gain
One cell FEE chip Track&hold (peak detector)
FEE chip (tower) Charge Sensitive Amplifier Test (calibration) circuitry Shaper Track&Hold (Peak Detector) Driver
Trieste CSA
Charge sensitive amplifier Cd Ub Uin Uout Ch Cl
Summator Ub Ch Cl
Summator Charge Sensitive Amplifier Test (calibration) circuitry Shaper Track&Hold (Peak Detector) DriverCharge Sensitive Amplifier Test (calibration) circuitry Shaper Track&Hold (Peak Detector) Driver
G10 PCB 5-7 layers Read-Out Chip SILICON SENSOR Poliimide Film 2.5