Due to CMOS technology scaling, it becomes interesting to represent analog signals by temporal aspects (such as zero crossings) rather than voltages. This is called time encoding.

One possible technique uses pulse-width modulation, where the signal is represented by the width of a pulse. Such techniques combine very well with today's digital technology, which can achieve multi-GHz switching speed.

In this project we will investigate such time-encoding techniques for application in A/D converters.