DESCRIPTION The ADE78541 is a high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7854 incorporates second-order - ADCs, a processing required to perform total active and apparent energy measurement and rms calculations. A fixed function digital signal processor (DSP) executes this signal processing. The ADE7854 is suitable to measure active and apparent energy in various 3-phase configurations, such as WYE or DELTA services, with both three and four wires. The ADE7854 provides system calibration features for each phase, that is, rms offset correction, phase calibration, and gain calibration. The CF1, CF2 and CF3 logic outputs provide a wide choice of power current rms values. 1 U.S. Pattents pending. The ADE7854 has waveform sample registers that allow access to all ADC outputs. The device also incorporates power quality measurements such as short duration low or high voltage detections, short duration high current va FEATURES Highly accurate; supports EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22 and IEC 62053-23 Compatible with 3-phase, 3 or 4 wire (delta or wye) and other 3-phase services Supplies total active / apparent energy on each phase and on the overall system Less than 0.1% error in active energy over a dynamic range of 1000 to 1 at 25C Less than 0.2% error in active energy over a dynamic range of 3000 to 1 at 25C Supports current transformer and di/dt current sensors Less than 0.1% error in voltage and current rms over a dynamic range of 1000 to 1 at 25C Supplies sampled waveform data on all 3 phases and for apparent powers Phase angle measurements in both current and voltage channels with max 0.3 error Wide supply voltage operation 2.4 to 3.7V Reference 1.2 V (drift 10 ppm/C typ) with external overdrive capability Single 3.3 V supply 40-Lead Frame Chip Scale (LFCSP) Lead Free Package Operating temperature -40 to 85C Flexible I2C, SPI, HSDC serial interfaces GENERAL DESCRIPTION The Specifications subject to change without notic