ADE7758 Poly Phase Multifunction Energy Metering IC with Per Phase Information Data Sheet (Rev. D)
DESCRIPTION The ADE77581 is a high accuracy, 3-phase electrical energy measurement IC with a serial interface and two pulse outputs. The ADE7758 incorporates second-order - ADCs, a digital integrator, reference circuitry, a temperature sensor, and all the signal processing required to perform active, reactive, and apparent energy measurement and rms calculations. The ADE7758 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 ADE7758 provides system calibration features for each phase, that is, rms offset correction, phase calibration, and power calibration. The APCF logic output gives active power information, and the VARCF logic output provides instantaneous reactive or apparent power information (continued on Page 4). 1 U.S. patents pending. FUNCTIONAL BLOCK DIAGRAM PHASE BANDPHASE CDATA4AVDDPOWERSUPPLYMONITOR12REFIN/OUT11AGNDADC-+9ICP10ICNPGA1ADC-+14VCP13VNPGA2ACTIVE/REACT FEATURES Highly accurate; supports IEC 60687, IEC 61036, IEC 61268, IEC 62053-21, IEC 62053-22, and IEC 62053-23 Compatible with 3-phase/3-wire, 3-phase/4-wire, and other 3-phase services Less than 0.1% active energy error over a dynamic range of 1000 to 1 at 25 C Supplies active/reactive/apparent energy, voltage rms, current rms, and sampled waveform data selectable between reactive and apparent power with programmable frequency Digital power, phase, and rms offset calibration On-chip, user-programmable thresholds for line voltage SAG and overvoltage detections An on-chip, digital integrator enables direct interface-to-current sensors with di/dt output A PGA in the current channel allows direct interface to shunts and current transformers An SPI-compatible serial interface with IRQ Proprietary ADCs and DSP provide high accuracy over large variations in environmental conditions and time Reference 2.4 V (drift 30 ppm/ C typical) with external overdrive capability Single 5 V supply, low Specifications subject to change without notic
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MHz/128, CLKIN/128, POWER17VARCFADE775804443-001, BYTEt904443-004, OUTPUTPINCL50pF04443-002, ADE77581, ON-CHIP, ADE7758
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