Abstract
Many biological signals of interest have very sparse and sporadic behavior, like that of a human heartbeat. This leads to large amounts of wasted power in uniform sampling analog-to-digital converters (US-ADC), since the data converter is making conversions even when the input signal is not changing. A level-crossing analog-to-digital converter (LC-ADC) can solve this problem because it only performs conversions when there is a significant change in the input signal. This project covers the design and layout of a new LC-ADC architecture that consumes less power than conventional LC-ADC’s. Simulations for the LC-ADC, and its sub-components, were performed over process, supply voltage, and temperature (PVT) variations before and after layout to verify the functionality and determine the power consumption of the designs.