Atmel M90E32AS
Enhanced Poly-Phase High-Performance Wide-Span
Energy Metering IC
DATASHEET FEATURES
Metering Features Metering features fully in compliance with the requirements of IEC62052-11,
IEC62053-22 and IEC62053-23, ANSI C12.1 and ANSI C12.20; applicable in polyphase class 0.2S, 0.5S or class 1 watt-hour meter or class 2 var-hour meter. Accuracy of В±0.1% for active energy and В±0.2% for reactive energy over a
dynamic range of 6000:1. Temperature coefficient is 6 ppm/ в„ѓ (typ.) for on-chip reference voltage. Automatically temperature compensated. Single-point calibration on each phase over the whole dynamic range for active
energy; no calibration needed for reactive/ apparent energy. В±1 в„ѓ (typ.) temperature sensor accuracy. Flexible piece-wise non-linearity compensation: three current (RMS value)-based
segments with two programmable thresholds for each phase. Independent gain and
phase angle compensation for each segment. Electrical parameters measurement: less than В±0.5% fiducial error for Vrms, Irms,
mean active/ reactive/ apparent power, frequency, power factor and phase angle. Active (forward/reverse), reactive (forward/reverse), apparent energy with independent energy registers. Programmable startup and no-load power thresholds. 6 dedicated ADCs for phase A/B/C current and voltage sampling circuits. Current
sampled over Current Transformer (CT) or Rogowski coil (di/dt coil); voltage sampled over resistor divider network. Programmable power modes: Normal, Idle, Detection and Partial Measurement
mode. Fundamental (0.2%) and harmonic (1%) active energy with dedicated energy /
power registers and independent energy outputs. Current and voltage instantaneous signal monitoring. Enhanced event detection: sag, over voltage, phase loss, over current, reverse V/I
phase sequence, calculated neutral line current INC over-current and frequency
upper and lower threshold. Other Features 3.3V single power supply. Operating voltage range: 2.8V~3.6V. Metering accuracy
guaranteed within 3.0V~3.6V. Four-wire SPI interface. Programmable voltage sag detection and zero-crossing output. Crystal oscillator frequency: 16.384MHz. On-chip two capacitors and no need of
external capacitors. Lower power consumption. I=13mA (typ.) in Normal mode. TQFP48 package. Operating temperature: -40 в„ѓ ~ +85 в„ѓ . Atmel-46003B-SE-M90E32AS-Datasheet_02122015 APPLICATION Poly-phase energy meters of class 0.2S, 0.5S and class 1 which are used in three-phase four-wire (3P4W, Y0) or
three-phase three-wire (3P3W, Y or О”) systems. Power monitoring instruments which need to measure vol …