Design and optimization of a 16-bit spike detector based on 90nm CMOS technology

Abstract

To deeply understanding of brain function, the rapid and accurate extracting relevant signals during brain operation has become increasingly important. As our understanding of brain function advances, the ability to extract relevant signals quickly and accurately becomes increasingly crucial. Therefore, a 16-bit spike detector has been designed to detect neural signals. Since a 4-bit absolute value detector is a critical module of the 16-bit spike detector, this paper presents a design for a 4-bit value comparator using a chain adder and a comparator. Two methods, changing the supply voltage and changing the gate size, were utilized to reduce power consumption, and it was found that changing the supply voltage method was more effective. Additionally, the circuits layout was designed for simulation to enhance the authenticity and reliability of the results. Currently, brain-computer interface technology remains a widely discussed topic in the field of neuroscience, and the speed and accuracy of neural signal processing continue to be critical issues that need to be addressed.