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ADE7752AR データシート(PDF) 1 Page - Analog Devices |
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ADE7752AR データシート(HTML) 1 Page - Analog Devices |
1 / 10 page REV. PrB 08/01 Preliminary Technical Data PRELIMINARY TECHNICAL DATA 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. = ADE7752* One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 ThreePhaseEnergyMeteringIC withPulseOutput FUNCTIONAL BLOCK DIAGRAM CLKOUT CLKIN DGND CF S1 F1 F2 DIGITAL-TO-FREQUENCY CONVERTER 2.5V REF REFIN/OUT AGND 4k Ω Σ IBP IBN ADC VBP ADC VN ICP ICN ADC VCP ADC VDD RESET ADE7752 Power Supply Monitor HPF Φ LPF IAP IAN ADC VAP ADC PHASE CORRECTION HPF Φ LPF PHASE CORRECTION HPF Φ LPF PHASE CORRECTION S0 SCF REVP 7 8 15 10 14 13 5 6 16 11 12 4 18 21 22 23 24 1 20 19 2 17 3 FEATURES High Accuracy, Supports 50 Hz/60 Hz IEC 687/1036 Less than 0.1% Error Over a Dynamic Range of 500 to 1 Compatible with 3-phase/3-wire and 3-phase/4-wire configurations The ADE7752 Supplies Average Real Power on the Frequency Outputs F1 and F2 The High Frequency Output CF Is Intended for Calibration and Supplies Instantaneous Real Power The Logic Output REVP indicates a Potential Miswiring or Negative Power for each phase Direct Drive for Electromechanical Counters and Two Phase Stepper Motors (F1 and F2) Proprietary ADCs and DSP Provide High Accuracy over Large Variations in Environmental Conditions and Time On-Chip Power Supply Monitoring On-Chip Creep Protection (No Load Threshold) On-Chip Reference 2.5 V ± 8% (30 ppm/8C Typical) with External Overdrive Capability Single 5 V Supply, Low Power (15 mW Typical) Low Cost CMOS Process *Patents pending GENERAL DESCRIPTION The ADE7752 is a high accuracy three phase electrical energy measurement IC. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard. The only analog circuitry used in the ADE7752 is in the ADCs and reference circuit. All other signal processing (e.g., multiplication, filtering and summation) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time. The ADE7752 supplies average real power information on the low frequency outputs F1 and F2. These logic outputs may be used to directly drive an electromechanical counter or interface with an MCU. The CF logic output gives instan- taneous real power information. This output is intended to be used for calibration purposes, or as interface with an MCU. The ADE7752 includes a power supply monitoring circuit on the AVDD supply pin. The ADE7752 will remain inactive until the supply voltage on VDD reaches 4 V. If the supply falls below 4 V, the ADE7752 will also be reset and no pulses will be issued on F1, F2 and CF. Internal phase matching circuitry ensures that the voltage and current channels are phase matched. An internal no-load threshold ensures that the ADE7752 does not exhibit any creep when there is no load. The ADE7752 is available in 24-lead SOIC packages. |
同様の部品番号 - ADE7752AR |
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同様の説明 - ADE7752AR |
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