2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87155A Time to Digital Converter was designed (CMOS 0.35 $\mum) in order to be used in Liquid Xenon PET prototype. The circuit proved to be able to work at -120 degrees C, while showing a resolution of 250 ps. The circuit enables a low readout dead time (<90 ns) and provides a fully synchronous digital interface for easy data retrieval.4 pages, submitted to IEEE Transactions on Nuclear ScienceInstrumentation and Detectorstext