APPARATUS AND METHOD FOR REDUCING ENERGY FLUCTUATIONS IN A PORTABLE DATA DEVICE

摘要

A portable data device employs an integrated circuit having a signal processor(112) that receives a power signal from an external source (308) via a power node. A decoupling device (304) is placed between the power node and the signal processor (112). An energy reservoir (307) is placed in parallel with the signal processor (112), which acts in concert with the decoupling device(304) to isolate the effects of the signal processor (112) from the rest of the integrated circuit.