Memristor crossbar memory for hybrid ultra low power hearing aid speech processor

Abstract

Memristive memories are known for their high data density, small read/write delay, and relatively lower power dissipation. This makes them a good fit for biomedical devices. Here, we demonstrate a 2 kb memristive crossbar memory and interface it with an ultra-low power sub-threshold Finite Impulse Response (FIR) filter bank for hearing aid applications. The memory operates optimally at 0.8V supply level and is turned off while not in use. The filter system operates in sub-threshold to maximize power savings. The entire system operates at 0.96MHz clock frequency and consumes 744pJ per FIR operation.