Problem 2 The average CMOS inverter gate count in todays 4G

Problem 2:
The average CMOS inverter gate count in today’s 4G smart phone is several millions,
supporting Mb/s data. It has been envisioned that the gate count will exceed the billion
marks in the upcoming 5G smart phones, offering Gb/s data.

Let us assume that a 5G smart phone comprises 1 Billion gates. If 50% gates are active at
a given time and if VDD=5 V, average load capacitance per gate CL= 1 fF (1 fF=10-15F)
and the bit rate is 1 G bps, estimate the average dynamic power dissipation. Is the power
consumption acceptable to you? If not, what is the concern? Propose possible solutions.

Solution

As per the question a 5G smart phone comprises 1 Billion gates

=> total no. of Gates are = 1*10^9