Polyphase metering core with billing-grade accuracy
The ADE7854AACPZ is a 3-phase energy metering IC from Analog Devices, designed for polyphase revenue meters and power-quality monitors. Its 0.2% measurement error over the full input range meets the accuracy requirements for billing-grade Class 0.2 meters per IEC 62053-22. A single 2.8 V to 3.7 V supply rail powers the device, drawing 20 mA typical — low enough for line-powered metering designs that derive the supply from the voltage sensing path. The 400 kOhm input impedance minimises burden on external current transformers (CTs) or Rogowski coils, preserving phase accuracy across the dynamic range.
Package, footprint, and thermal design
The supplier device package is 40-LFCSP-WQ (6x6). Supplied in tray format (not tape-and-reel), which is typical for prototype and low-to-medium volume runs. The tray package is listed as Tray.
Digital I/O thresholds are specified at 0.4 V / 0.8 V low and 2.0 V / 2.4 V high, compatible with 3.3 V logic families (MCU, SoC, FPGA) without external level translation on the communication bus.
ROHS3 compliant, with no RoHS exemption expiry risk for designs targeting EU or global markets.