A hexagonal Field Programmable Analog Array consisting of 55 digitally tunable OTAs

Abstract

This paper reports on a Field Programmable Analog Array (FPAA) for high-frequency continuous-time analog filters. A rapid-prototyping hardware is presented, which implements a unique hexagonal topology of 55 tunable OTAs for reconfigurable instantiation of Gm-C filters in a 0.13 mum CMOS technology. It is the first analog array to achieve a bandwidth, which allows processing of intermediate frequencies used in communication systems. The maximum power dissipation is 70 mW at 1.2 V supply. The intuitive chip structure allows direct mapping of G <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</sub> -C filter schematics with up to 7 independent nodes, immediate download to the hardware, and evaluation of the working prototype.