A register node in a CMOS circuit has a total load capacitance of and is charged and…

PHYSICS · Multi-part · Fermi University Physics · Electronics, Instrumentation & Communication · Digital electronics, embedded systems and data acquisition · Digital electronics, embedded systems and data acquisition

Electronics for Measurement, Ch Digital logic and its physical realisation

Problem

A register node in a CMOS circuit has a total load capacitance of

50\,\mathrm{pF}

and is charged and discharged once every clock cycle (activity factor

\alpha = 1

) at a clock frequency of

20\,\mathrm{MHz}

, from a

3.3\,\mathrm{V}

supply. ((a)) Compute the average supply current drawn by this node. ((b)) Compute the power it dissipates. ((c)) State in words where this energy goes.

Browse the problem library