This is the need of high levels of silicon integration in modern processes, but sophisticated processes have intrinsically higher power indulgence. Customers always look for smaller, trim and graceful mobile devices. One of the top operator requirements in 4G is Power efficiency. Almost 70% of users look for longer talk time and standby time as key feature for mobile phones. Normally, mobile users demand additional features and prolonged battery life at a lower cost. Therefore, in portable devices, ‘the low power design is the most decisive factor to think while designing system on chip.
Minimizing the overall power consumption in such devices is essential because it is advantageous to exploit the run time with least possible requirements on weight, battery life and size owed to batteries. Hence, it is necessary to take care of the system’s total power consumption. Power dissipation is the main constraint when it comes to portability.