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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADE7754 датащи(PDF) 1 Page - Analog Devices |
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ADE7754 датащи(HTML) 1 Page - Analog Devices |
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1 / 44 page  REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved. ADE7754 Polyphase Multifunction Energy Metering IC with Serial Port FUNCTIONAL BLOCK DIAGRAM LPF2 X2 AVRMSOS X2 HPF AVAG ADC ADC AAPGAIN APHCAL PGA1 PGA2 AAPOS AWG ABS |X| AIRMSOS LPF2 X2 BVRMSOS X2 HPF BVAG ADC ADC BAPGAIN BPHCAL PGA1 BAPOS BWG ABS |X| BIRMSOS LPF2 X2 CVRMSOS X2 HPF CVAG ADC ADC CAPGAIN CPHCAL PGA1 PGA2 CAPOS CWG ABS |X| CIRMSOS DFC CFNUM CFDEN % % WDIV VADIV POWER SUPPLY MONITOR ADE7754 REGISTERS AND SERIAL INTERFACE IAP IAN VAP IBP IBN VBP ICP ICN VCP VN PGA2 2.4V REF ADE7754 AGND REFIN/OUT DIN DOUT SCLK CS IRQ CF DVDD DGND CLKIN CLKOUT RESET AVDD ADC 4k AVGAIN BVGAIN CVGAIN TEMP SENSOR FEATURES High Accuracy, Supports IEC 687/61036 Compatible with 3-Phase/3-Wire, 3-Phase/4-Wire and any Type of 3-Phase Services Less than 0.1% Error in Active Power Measurement over a Dynamic Range of 1000 to 1 Supplies Active Energy, Apparent Energy, Voltage RMS, Current RMS, and Sampled Waveform Data Digital Power, Phase, and Input Offset Calibration On-Chip Temperature Sensor ( 4 C Typical after Calibration) On-Chip User Programmable Thresholds for Line Voltage SAG and Overdrive Detections SPI Compatible Serial Interface with Interrupt Request Line (IRQ) Pulse Output with Programmable Frequency Proprietary ADCs and DSP Provide High Accuracy over Large Variations in Environmental Conditions and Time Single 5 V Supply GENERAL DESCRIPTION The ADE7754 is a high accuracy polyphase electrical energy measurement IC with a serial interface and a pulse output. The ADE7754 incorporates second order Σ-∆ ADCs, reference circuitry, temperature sensor, and all the signal processing required to perform active, apparent energy measurements, and rms calculation. The ADE7754 provides different solutions for measuring active and apparent energy from the six analog inputs, thus enabling the use of the ADE7754 in various power meter services such as 3-phase/4-wire, 3-phase/3-wire, and 4-wire delta. In addition to rms calculation, active and apparent power infor- mation, the ADE7754 provides system calibration features for each phase (i.e., channel offset correction, phase calibration, and gain calibration). The CF logic output provides instanta- neous active power information. The ADE7754 has a waveform sample register that enables access to ADC outputs. The part also incorporates a detection circuit for short duration low or high voltage variations. The voltage threshold levels and the duration (number of half line cycles) of the variation are user programmable. A zero-crossing detection is synchronized with the zero-crossing point of the line voltage of each of the three phases. The infor- mation collected is used to measure each line’s period. It is also used internally to the chip in the line active energy and line apparent energy accumulation modes. This permits faster and more accurate calibration of the power calculations. This signal is also useful for synchronization of relay switching. Data is read from the ADE7754 via the SPI serial interface. The interrupt request output ( IRQ) is an open-drain, active low logic output. The IRQ output goes active low when one or more interrupt events have occurred in the ADE7754. A status regis- ter indicates the nature of the interrupt. The ADE7754 is available in a 24-lead SOIC package. |
Аналогичный номер детали - ADE7754_15 |
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Аналогичное описание - ADE7754_15 |
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