Ultra-Low Power, Low-Voltage, Fully-Tunable, Bulk-Controlled Bump Circuit

This work proposes an ultra-low power (6.0nW), low voltage (0.6V), bulk-controlled, 10-transistors bump circuit architecture for Gaussian-function implementation. It can be used as a building block for analog implementation of Gaussian Mixture Model and Kernel Methods. The Gaussians curve width, height and center are independently and electronically adjustable. It consists of a modified current correlator and a bulk-controlled differential block with all transistors operating in sub-threshold. Proper operation, accuracy and robustness are confirmed via simulation and theoretical analysis. It was implemented in TSMC 90nm CMOS process and was simulated using the Cadence IC Suite.