MHITIC: 8-Channels, 1-ns, Multi-Hit Time-to-Digital Converter CMOS Integrated Circuit

A CMOS 8-channel, 1 ns bin size, 23 bit dynamic range multi-hit time-to-digital converter is presented in this paper. A new architecture mixing two previous TDC realizations has been adopted. The chip stores up to 32 events per channel with a double-hit resolution of 16 ns. A prototype of about 120 mm
²
has been integrated in a 1 μm process. Test results show that performance, in particular linearity, better than those of comparable devices has been achieved.