M90E36A_14 Datasheet, PDF (1/87 Pages) ATMEL Corporation – Enhanced Poly-Phase High-Performance Wide-Span

Atmel M90E36A
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 class
0.2S, 0.5S or class 1 poly-phase watt-hour meter or class 2 poly-phase var-hour
meter.
• Accuracy of ±0.1% for active energy and ±0.2% for reactive energy over the
dynamic range of 6000:1.
• Temperature coefficient is 6 ppm/ ℃ (typical) for on-chip reference voltage.
• Single-point calibration on each phase over the whole dynamic range for active
energy; no calibration needed for reactive/apparent energy.
• ±1 ℃ (typical) temperature sensor accuracy.
• Electrical parameters measurement: less than ±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 indepen-
dent energy registers. Active/ reactive/ apparent energy can be output by pulse or
read through energy registers to adapt to different applications.
• Programmable startup and no-load power threshold, special designed of startup
and no-load circuits to eliminate crosstalk among phases achieving better accuracy
especially at low power conditions.
• Dedicated ADC and different gains for phase A/B/C and Neutral line current sam-
pling circuits. Current sampled over current transformer (CT) or Rogowski coil (di/dt
coil); phase A/B/C voltage sampled over resistor divider network or potential trans-
former (PT).
• Programmable power modes: Normal mode (N mode), Idle mode (I mode), Detec-
tion mode (D mode) and Partial Measurement mode (M mode).
• Fundamental (CF3, 0.2%) and harmonic (CF4, 1%) active energy with dedicated
energy and power registers.
• Total Harmonic Distortion (THD) and Discrete Fourier Transform (DFT) functions for
2 ~ 32 order harmonic component. THD and DFT results available in SPI accessible
registers. Both voltage and current of all phases processed within the same time
period.
• Event detection: sag, phase loss, reverse voltage/ current phase sequence, reverse
flow, calculated neutral line current I_NC overcurrent sampled neutral line current I_NS
overcurrent and THD+N over-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 with Direct Memory Access (DMA) mode to stream out 7-
channel ADC raw data.
• Parameter diagnosis function and programmable interrupt output of the IRQ inter-
Atmel-46004A-SE-M90E36A-Datasheet_052214