The ADE7758 is a high-precision, multifunction three-phase energy metering IC that supports IEC 60687, IEC 61036, IEC 61268, IEC 62053-21, IEC 62053-22, and IEC 62053-23 standards and is compatible with 3-phase 3-wire, 3-phase 4-wire, and other three-phase power systems. At 25°C, the dynamic range can reach 1000:1, and the maximum error is less than 0.1%. It also supports active power, reactive power, apparent power, voltage, current, and other information acquisition, and has programmable frequency pulse output, digital power, phase, voltage offset calibration, voltage sag/overvoltage detection, direct dc current detection, etc.