Details, datasheet, quote on part number: ADE7880
PartADE7880
Category
TitlePolyphase Multifunction Energy Metering IC with Harmonic Monitoring
DescriptionThe ADE7880 is a high accuracy, 3-phase electrical energy measurement ICs featuring an Adaptive Real Time Monitoring (ARTM) harmonic engine. ARTM is capable of monitoring 3 user selectable harmonics in addition to the fundamental. ARTM automatically tracks fundamental frequency and provides real time harmonic measurement updates. Harmonic analysis includes current RMS, voltage RMS, active, reactive and apparent powers, power factor, harmonic distortion and Total Harmonic Distortion plus Noise (THD+N) calculations.

ADE7880 incorporate seven second-order Σ Δ ADCs, a digital integrator, reference circuitry, and all the signal processing required to perform total (fundamental and harmonic) active, fundamental reactive, and apparent energy measurement, fundamental only active and reactive energy measurement, and rms calculations.

ADE7880 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. This metering ICs provide system calibration features for each phase: rms offset correction, phase calibration, and gain calibration.

ADE7880 is pin-pin compatible with popular ADE7878, ADE7868, ADE7858, ADE7854 3-phase energy metering measurement ICs.
CompanyAnalog Integrations Corporation
DatasheetDownload ADE7880 datasheet
PackagesADE7880ACPZ
ADE7880ACPZ-RL
  

 

Features, Applications
FEATURES
Polyphase Multifunction Energy Metering IC with Harmonic Monitoring ADE7880

Highly accurate; supports IEC 62053-21, IEC 62053-22, IEC EN 50470-3 and ANSI C12.20 standards Supports IEC 61000-4-7 Class I and II accuracy specification Compatible with or 4-wire (delta or wye), and other 3-phase services Supplies rms, active, reactive and apparent powers, power factor, THD+N and harmonic distortion of all harmonics within 2.8 KHz pass band on all phases Supplies rms and harmonic distortions of all harmonics within 2.8 KHz pass band on neutral current Less than 1% error in harmonic current and voltage rms over a dynamic range = 25°C Less than 1% error in harmonic active and reactive powers over a dynamic range = 25°C Supplies total (fundamental and harmonic) active and apparent energy and fundamental active/reactive energy on each phase and on the overall system Less than 0.1% error in active energy over a dynamic range = 25°C Less than 0.2% error in active energy over a dynamic range = 25°C Less than 0.1% error in fundamental reactive energy over a dynamic range = 25°C Less than 0.2% error in fundamental reactive energy over a dynamic range = 25°C Supports current transformer and di/dt current sensors Dedicated ADC channel for neutral current input Less than 0.1% error in voltage and current rms over a dynamic range = 25°C Supplies sampled waveform data on all three phases and on neutral current Selectable no load threshold levels for total and fundamental active and reactive powers, as well as for apparent powers Battery supply input for missing neutral operation Phase angle measurements in both current and voltage channels with a typical 0.3° error Wide-supply voltage operation: 3.7 V Reference: 1.2 V (drift 10 ppm/°C typical) with external overdrive capability Single 3.3 V supply 40-lead lead frame chip scale package (LFCSP), Pb-free, pin for pin compatible with ADE7858, ADE7868 and ADE7878 Operating temperature: to +85°C

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. Specifications subject to change without notice. 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 owners.

APPLICATIONS

Energy metering systems Power quality monitoring Solar inverters Process monitoring Motor control Protective devices

The 1 is high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7880 device incorporates second-order sigmaintegrator, reference circuitry, and all of the signal processing required to perform the total (fundamental and harmonic) active, and apparent energy measurement, rms calculations, as well as fundamental-only active and reactive energy measurement. In addition, the ADE7880 computes the rms of harmonics on the phase and neutral currents and on the phase voltages, together with the active, reactive and apparent powers, the power factor and harmonic distortion on each harmonic for all phases. Total Harmonic Distortion Plus Noise (THD+N) is computed for all currents and voltages. A fixed function digital signal processor (DSP) executes this signal processing. The DSP program is stored in the internal ROM memory. The ADE7880 is suitable for measuring active, reactive, and apparent energy in various 3-phase configurations, such as wye or delta services, with both three and four wires. The ADE7880 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 powers, apparent powers, or the sum of the current rms values, and fundamental active and reactive powers. The ADE7880 contains waveform sample registers that allow access to all ADC outputs. The devices also incorporate 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, SPI and I2C, can be used to communicate with the ADE7880. A dedicated high speed interface, the high speed data capture (HSDC) port, can be used

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 ©2011 Analog Devices, Inc. All rights reserved.

in conjunction with I2C to provide access to the ADC outputs and real-time power information. The ADE7880 also has two interrupt request pins, IRQ0 and IRQ1, to indicate that an enabled interrupt event has occurred. Three specially designed low power modes ensure the continuity of energy accumulation when the in a tampering situation. The ADE7880 is available

in the 40-lead LFCSP, Pb-free package, pin for pin compatible with ADE7858, ADE7868 and ADE7878 devices.

Features...............................................................................................1 Applications.......................................................................................1 General Description..........................................................................1 Revision History................................................................................3 Functional Block Diagram...............................................................4 Specifications.....................................................................................5 Timing Characteristics.................................................................9 Absolute Maximum Ratings..........................................................12 Thermal Resistance.....................................................................12 ESD Caution................................................................................12 Pin Configuration and Function Descriptions...........................13 Typical Performance Characteristics............................................15 Test Circuit.......................................................................................16 Terminology.....................................................................................17 Power Management........................................................................18 PSM0--Normal Power Mode (All Parts).................................18 PSM1--Reduced Power Mode..................................................18 PSM2--Low Power Mode..........................................................18 PSM3--Sleep Mode (All Parts).................................................19 Power-Up Procedure..................................................................21 Hardware Reset............................................................................22 Software Reset Functionality.....................................................22 Theory of Operation.......................................................................23 Analog Inputs..............................................................................23 Analog-to-Digital Conversion..................................................23 Current Channel ADC...............................................................24 di/dt CurRent Sensor and Digital Integrator..............................26 Voltage Channel ADC................................................................27

Changing Phase Voltage Datapath........................................... 28 Power Quality Measurements................................................... 28 Phase Compensation.................................................................. 34 Reference Circuit......................................................................... 35 Digital Signal Processor............................................................. 35 Root Mean Square Measurement............................................. 36 Active Power Calculation........................................................... 40 Fundamental Reactive Power Calculation............................... 46 Apparent Power Calculation..................................................... 49 Power Factor calculation............................................................ 52 Harmonics calculations.............................................................. 53 Waveform Sampling Mode........................................................ 61 Energy-to-Frequency Conversion............................................ 62 No Load Condition..................................................................... 66 Checksum Register..................................................................... 67 Interrupts..................................................................................... 68 Serial Interfaces........................................................................... 69 ADE7880 quick setup as energy meter.................................... 76 ADE7880 Evaluation Board...................................................... 77 Die Version.................................................................................. 77 Silicon anomaly............................................................................... 78 ADE7880 Functionality Issues.................................................. 78 Functionality Issues.................................................................... 78 Registers List.................................................................................... 79 Outline Dimensions......................................................................102 Ordering Guide.........................................................................102


 

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