Analog front-end design implementation of USB2.0 OTG Attach Detection Protocol

This paper presents a design solution for the Attach Detection Protocol under USB2.0 On-The-Go (OTG) Specification released by the USB Organization in year 2010. The implementation of ADP can be divided into-two categories, namely Analog and Digital Front-End. In this paper, analog front-end design will be more focused. This including circuit implementation, PVT variation, simulation result as well as future work will be described in detailed while the overall system overview will still be discussed for a clearer picture. This system uses supply voltage of 1.8V, 45nm CMOS process technology with PVT of ±10% supply variation, -40°C to 110°C temperature variation and 13 process corners.