The Analog Signal Chain

Abstract

Embedded systems interact with the outer real world processing information received from it and delivering back an output to modify the performance of a device or to provide information needed to make decisions. In this environment, most signals to be processed are analog. Temperature is not simply hot or cold, pressure high or low, light intensity bright or dark. They all fall within a wide range of possible values. Hence, it becomes necessary to interface this analog world with our digital embedded systems.