A new architecture of field programmable analog arrays for reconfigurable instantiation of continuous-time filters

A new methodology of field programmable analog arrays (FPAAs) is presented, which is particularly designed as hardware platform for the instantiation of continuous-time (CT) adaptable filters. The array topology consists of 17 digitally configurable analog blocks (CABs) connected through a hexagonal interconnect network. Each CAB is built of tunable G_m-C integrators, which provide both routing and shaping of the analog signal and are the building blocks for high-speed continuous-time filters. Intelligent IO-buffers provide reconfiguration of the array with minimal disturbance of the continuous analog signal. The architecture is introduced and reviewed as hardware platform for any circuit that consists of the given number of G_m-C cells and an exemplary instantiation of a 4th order biquad Butterworth filter is shown.