CMOS developments for photonic modules on endoscopic capsules

This paper presents few developments on CMOS microelectronics for the implementation of photonic modules on endoscopic capsules (ECs). The first microelectronic system was developed with the goal to allow photodynamic therapy (PDT) on ECs. This first system was designed in the 2-metals/1-poly 0.7μm CMOS process from the on-semiconductor. The second development is an optical sensor designed for spectroscopy analysis on ECs from diffuse reflectance light originated in the gastrointestinal tissue. This second system was designed in the mixed-signal/RF 0.18μm CMOS general process from the Taiwan Semiconductor (TSMC).