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ADE7858ACPZ Arkusz danych(PDF) 1 Page - Analog Devices |
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ADE7858ACPZ Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 76 page Poly Phase Multifunction Energy Metering IC with per Phase Active and Reactive Powers Preliminary Technical Data ADE7858 Rev. PrA Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2009 Analog Devices, Inc. All rights reserved. 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 (fundamental and harmonic) active/reactive/ apparent energy on each phase and on the overall system Less than 0.1% error in active and reactive energy over a dynamic range of 1000 to 1 at 25°C Less than 0.2% error in active and reactive energy over a dynamic range of 3000 to 1 at 25°C 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 25°C Supplies sampled waveform data on all 3 phases Selectable No-load threshold level for total active, reactive and 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 85°C Flexible I2C, SPI®, HSDC serial interfaces GENERAL DESCRIPTION The ADE78581 is a high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7858 incorporates second-order Σ-Δ ADCs, a digital integrator, reference circuitry, and all the signal processing required to perform total (fundamental and harmonic) active, reactive and apparent energy measurement, and rms calculations. A fixed function digital signal processor (DSP) executes this signal processing. The ADE7858 is suitable to measure active, reactive, and apparent energy in various 3-phase configurations, such as WYE or DELTA services, with both three and four wires. The ADE7858 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 information: total active/reactive/apparent power or sum of current rms values. The ADE7858 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 variations, line voltage period measurement and angles between phase voltages and currents. Two serial interfaces can be used to communicate with the ADE7858: SPI or I2C while a dedicated high speed interface, HSDC (High Speed Data Capture) port, can be used in conjunction with I2C to provide access to the ADC outputs and real time power information. The ADE7858 has also two interrupt request pins, 0 IRQ and 1 IRQ , to indicate that an enabled interrupt event has occurred. The ADE7858 is available in 40-lead LFCSP lead free package. 1 U.S. patents pending. |
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