Prototype Data Concentrator ASIC for Time-Projection Chamber of MPD Experiment

The results of the prototype development of a data concentrator application-specific integrated circuit (ASIC) for the time-projection chamber of the MPD experiment (NICA, Dubna) are presented. ASIC is designed to serialize data coming from two SAMPA detector chips and transmit them via AWG 36 type electrical cables of up to 1 m length at 2.56 Gbit/s transmission rate to the data acquisition controller board. The article describes the structure, main characteristics and layout of the ASIC, as well as the protocol of data exchange with the external controller. A description is given of the design methods used to ensure the radiation tolerance of ASIC to the effects of high-energy particles. The prototypes are manufactured using 65 nm CMOS process from TSMC and embedded in CPGA120 package. The total power consumption of the ASIC does not exceed 500 mW.