HT7038E series is a multi-function high-precision three-phase power dedicated metering chip launched by HiTrend. It is suitable for three-phase three-wire and three-phase four-wire applications. The chip integrates 6-channel second-order sigma-delta ADC, reference voltage circuit and all power, energy, effective value, power factor and frequency measurement circuits. It also integrates SPI communication interface, VREF digital automatic compensation function, on-chip temperature detection, startup/standby, energy pulse output and other functions, which is very suitable for power measurement, energy management, new energy vehicles, instruments and meters, etc. applications.