Datasheet ADE9000 (Analog Devices)

High Performance, Multiphase Energy, and Power Quality Monitoring IC Data Sheet ADE9000 FEATURES Events, such as dip and swell, can trigger waveform storage 7 high performance ADCs Simplifies data collection for IEC 61000-4-7 harmonic analysis 101 dB SNR Advanced metrology feature set Wide input voltage range: ±1 V, 707 mV rms FS at gain = 1 Total and fundamental active power, volt amperes reactive Differential inputs (VAR), volt amperes (VA), watthour, VAR hour, and VA hour ±25 ppm/°C maximum channel drift (including ADC, internal Total and fundamental IRMS, VRMS VREF, PGA drift) enabling 10000:1 dynamic input range Total harmonic distortion Class 0.2 metrology with standard external components Power factor Power quality measurements Supports active energy standards: IEC 62053-21 and Enables implementation of IEC 61000-4-30 Class S IEC 62053-22; EN50470-3; OIML R46; and ANSI C12.20 VRMS ½, IRMS ½ rms voltage refreshed each half cycle Supports reactive energy standards: IEC 62053-23, IEC 62053-24 10 cycle rms/12 cycle rms High speed communication port: 20 MHz serial port Dip and swell monitors interface (SPI) Line frequency—one per phase Integrated temperature sensor with 12-bit successive Zero crossing, zero-crossing timeout approximation register (SAR) ADC Phase angle measurements ±3°C accuracy from −40°C to +85°C Supports CTs and Rogowski coil (di/dt) sensors APPLICATIONS Multiple range phase/gain compensation for CTs Energy and power monitoring Digital integrator for Rogowski coils Power quality monitoring Flexible waveform buffer Protective devices Able to resample waveform to ensure 128 points per line Machine health cycle for ease of external harmonic analysis Smart power distribution units Polyphase energy meters GENERAL DESCRIPTION
sampling rate that varies based on line frequency to ensure The ADE90001 is a highly accurate, fully integrated, multiphase 128 points per line cycle. Resampling simplifies fast Fourier energy and power quality monitoring device. Superior analog transform (FFT) calculation of at least 50 harmonics in an performance and a digital signal processing (DSP) core enable external processor. accurate energy monitoring over a wide dynamic range. An The ADE9000 simplifies the implementation of energy and integrated high end reference ensures low drift over temperature power quality monitoring systems by providing tight integration of with a combined drift of less than ±25 ppm/°C maximum for acquisition and calculation engines. The integrated ADCs and the entire channel including a programmable gain amplifier DSP engine calculate various parameters and provide data (PGA) and an analog-to-digital converter (ADC). through user accessible registers or indicate events through The ADE9000 offers complete power monitoring capability by interrupt pins. With seven dedicated ADC channels, the providing total as well as fundamental measurements on rms, ADE9000 can be used on a 3-phase system or up to three active, reactive, and apparent powers and energies. Advanced single-phase systems. It supports current transformers (CTs) or features such as dip and swell monitoring, frequency, phase Rogowski coils for current measurements. A digital integrator angle, voltage total harmonic distortion (VTHD), current total eliminates a discrete integrator required for Rogowski coils. harmonic distortion (ITHD), and power factor measurements The ADE9000 absorbs most complexity in calculations for a enable implementation of power quality measurements. The power monitoring system. With a simple host microcontroller, ½ cycle rms and 10 cycle rms/12 cycle rms, calculated according to the ADE9000 enables the design of standalone monitoring or IEC 61000-4-30 Class S, provide instantaneous rms measurements protection systems, or low cost nodes uploading data into the cloud. for real-time monitoring. Note that throughout this data sheet, multifunction pins, such The ADE9000 offers an integrated flexible waveform buffer that as CF4/EVENT/DREADY, are referred to either by the entire stores samples at a fixed data rate of 32 kSPS or 8 kSPS, or a pin name or by a single function of the pin, for example, EVENT, when only that function is relevant. 1 Protected by U.S. Patents 8,350,558; 8,010,304. Other patents are pending.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION REVISION HISTORY TYPICAL APPLICATIONS CIRCUIT SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS ENERGY LINEARITY OVER SUPPLY AND TEMPERATURE ENERGY ERROR OVER FREQUENCY AND POWER FACTOR ENERGY LINEARITY REPEATABILITY RMS LINEARITY OVER TEMPERATURE AND RMS ERROR OVER FREQUENCY ENERGY AND RMS LINEARITY WITH INTEGRATOR ON ENERGY AND RMS ERROR OVER FREQUENCY WITH INTEGRATOR ON SIGNAL-TO-NOISE RATIO PERFORMANCE TEST CIRCUIT TERMINOLOGY THEORY OF OPERATION MEASUREMENTS Current Channel ADC_REDIRECT Multiplexer Current Channel Gain, xIGAIN IB Calculation Using ICONSEL High-Pass Filter Digital Integrator Phase Compensation Multipoint Phase and Gain Calibration Voltage Channel RMS and Power Measurements Total and Fundamental RMS Total and Fundamental Active Power Total and Fundamental Reactive Power Total and Fundamental Apparent Power No Load Detection, Energy Accumulation, and Power Accumulation Features No Load Detection Feature Energy Accumulation Power Accumulation Digital to Frequency Conversion—CFx Output Energy and Phase Selection Configuring the CFx Pulse Width CFx Pulse Sign Clearing the CFx Accumulator POWER QUALITY MEASUREMENTS Zero-Crossing Detection CF3/ZX Zero-Crossing Timeout Line Period Calculation Angle Measurement Phase Sequence Error Detection Fast RMS½ Measurement 10 Cycle RMS/12 Cycle RMS Dip and Swell Indication Overcurrent Indication Peak Detection Power Factor Total Harmonic Distortion (THD) Resampling 128 Points per Cycle Temperature WAVEFORM BUFFER INTERRUPTS/EVENTS ACCESSING ON-CHIP DATA SPI PROTOCOL OVERVIEW ADDITIONAL COMMUNICATION VERIFICATION REGISTERS CRC OF CONFIGURATION REGISTERS CONFIGURATION LOCK REGISTER MAP REGISTER DETAILS OUTLINE DIMENSIONS ORDERING GUIDE