Low-power all-digital PLL designed for portable wireless terminals

摘要

NEC Corp. (NEC) and NEC Electronics Corp. (NECEL) have developed a low-power low-noise All-Digital Phase Lock Loop (ADPLL) LSI that is targeted at battery-powered portable wireless equipment. The 0.37mm~2 LSI features low-operation current of 8.1mA and lock-up time of only 20μs. Its low-phase noise of -105dBc/Hz in the frequency range of 2.1GHz to 2.8GHz makes it compatible with a wide variety of modern wirelessrnsystems, including Bluetooth, ZigBee, Wi-Fi, and WiMAX.