The ADE7858ACPZ-RL is a high-performance, single-chip energy measurement IC from Analog Devices. It is designed for energy metering applications in single-phase or three-phase power systems. It features an integrated current regulation PMIC (power management integrated circuit) and a current strategy that helps improve accuracy in any system set up. The device is packaged in a low-profile, RoHS-compliant, 40-pin LFCSP (lead-frame chip-scale package). This package allows a wide range of features to be included on the same chip and eliminates the need for external components. The device includes a 16-bit A/D converter, high-speed CPU, nonvolatile memory, EEPROM, and a static discharge (ESD) protection circuit. It also delivers accuracies better than Class 1 for single-phase or three-phase active energy measurements. Additionally, it provides highly accurate active/reactive/demand power metering, and has 6-cycle meter support. The ADE7858ACPZ-RL device is ideal for digital power meters and other energy measuring applications.