Evolution-based automated reconfiguration of field programmable analog devices

The paper presents some experiments in automatic reconfiguration of field programmable devices using evolutionary algorithms. The experiments use a Field Programmable Transistor Array (FPTA), reconfigurable at transistor level. While parasitic effects of imperfect switches interconnecting transistors deteriorate performance of conventional designs when mapped to the FPTA, evolutionary algorithms are able to find a working design solution. The experiments are performed with a stand-alone board-level evolvable system (SABLES) in which the evolutionary algorithm is implemented with a DSP. SABLES can automatically configure the FPTA in tens to hundreds of seconds, time in which evaluates ∼100,000 circuit candidate solutions. The paper overviews some examples of evolutionary synthesis of analog circuits on the FPTA.