TISIRC: A multichannel ASIC with gain control for SiPM detectors

Abstract

SiPM/MPPC are detectors that give a signal when a single photon hits them. To read those detectors circuits must, on the one hand, be fast enough to capture the signals, and on the other hand, manage the detector capacitance. Also, they must deal with SiPM gain variations depending on external variables, and read the complete range of fired pixels. This work aims to design and tape-out a SiPM readout chip that reads high-capacitance SiPMs with up to 3000 pixels and to control their gain. To achieve those objectives, a 4 channel chip was designed using a 180 nm CMOS technology, with bias voltage control of each detector to adjust their gains. The integrated circuit called TISIRC was designed, simulated, fabricated, and soon it will be tested.