关键词：电路芯片；智能电网；低功率
摘 要：Smart grid has become a revolution to our lives. Energy meters provide the basic information of smart grid, including active power/reactive power/apparent power and corresponding energy, RMS values of voltage and current, harmonic information, etc. The meter computes all these items and communicates with other meters or the gateway [1,2]. Therefore, the integrated circuit chips inside the meter must have the ability to accomplish all these functions.