Ultra-Low Power (4nW), 0.6V Fully-Tunable Bump Circuit operating in Sub-threshold regime

A compact, ultra-low power (4nW), low supply voltage (0.6V) Gaussian-bump circuit architecture for Radial Basis Functions implementation is presented. It consists of only ten transistors, all operating in sub-threshold. The Gaussians center, height and width are independently and electronically controlled. The proposed architecture is used as a building block to construct a 2 - D Gaussian cascaded bump structure, demonstrating its dimensional scalability. Proper operation, sensitivity and accuracy are confirmed via theoretical analysis and simulation. The presented architectures were realized in TSMC 90nm CMOS process and were simulated using the Cadence IC Suite.