SOI Poly-defined Diode for ESD Protection in High Speed I/Os

It is crucial to minimize the parasitic capacitance at a high-frequency I/O, found in applications such as high-speed serial links and radio receivers. Here, we study the bias-dependent capacitance of a poly-defined SOI diode-a popular ESD protection device according to C. Putnam et al. (2004), C. Entringer et al. (2005), M. Khazbinisky et al. (2005), S. Mitra et al. (2005), and S. Voidman et al. (1996). Also, we present a model for this diode; the model is intended for circuit simulation