A 0.25V 460nW asynchronous neural signal processor with inherent leakage suppression

A neural signal processor exploits an asynchronous timing strategy to dynamically minimize leakage and to self-adapt to the process variations and different operating conditions. Based on a logic topology with built-in leakage suppression, the self-timed processor demonstrates robust sub-threshold operation down to 0.25V, while consuming only 460nW in 0.03mm² in a 65nm CMOS technology, representing a 4.4X reduction in power compared to the state-of-the-art designs.