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ADE9078 数据表(PDF) 5 Page - Analog Devices |
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ADE9078 数据表(HTML) 5 Page - Analog Devices |
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5 / 108 page  ADE9078 Data Sheet Rev. 0 | Page 4 of 107 SPECIFICATIONS VDD = 2.7 V to 3.63 V, GND = AGND = DGND = 0 V, on-chip reference, CLKIN = 12.288 MHz crystal (XTAL), TMIN to TMAX = −40°C to +85°C for minimum and maximum specifications, TA = 25°C (typical) for typical specifications. Table 1.1 Parameter Min Typ Max Unit Test Conditions/Comments ACCURACY Measurement error per phase Total Active Energy 0.1 % Over a dynamic range of 5000 to 1, 10 sec accumulation; gain compensation only 0.2 % Over a dynamic range of 10,000 to 1, 20 sec accumulation; gain compensation only Total Reactive Energy 0.1 % Over a dynamic range of 5000 to 1, 10 sec accumulation; gain compensation only 0.2 % Over a dynamic range of 10,000 to 1, 20 sec accumulation; gain compensation only Total Apparent Energy 0.1 % Over a dynamic range of 1000 to 1, 2 sec accumulation 0.5 % Over a dynamic range of 5000 to 1, 10 sec accumulation Fundamental Reactive 0.1 % Over a dynamic range of 5000 to 1, 2 sec accumulation 0.2 % Over a dynamic range of 10,000 to 1, 20 sec accumulation IRMS, VRMS 0.1 % Over a dynamic range of 1000 to 1 0.5 % Over a dynamic range of 5000 to 1 Active Power, VAR 0.2 % Over a dynamic range of 5000 to 1, 1 sec accumulation Power Factor (PF) ±0.001 Over a dynamic range of 5000 to 1 64-Point per Line Cycle Resampled Data 0.1 % An FFT is performed to receive the magni- tude response; this error is the worst case error in the fundamental magnitude caused by resampling algorithm distortion; input signal is 50 Hz fundamental on voltage channel and fundamental with ninth har- monic at half of full scale on current channel 0.3 % An FFT is performed to receive the magni- tude response; this error is the magnitude error of ninth harmonic caused by the resampling algorithm distortion input signal is 50 Hz fundamental with ninth harmonic at half of full scale on current channel −72 dB Amplitude of highest spur; input signal is 50 Hz fundamental and ninth harmonic at half of full scale on the current channel 3 % An FFT is performed to receive the magni- tude response; this error is the magnitude error of 31st harmonic caused by resampling algorithm distortion; input signal is 50 Hz fundamental with 31st harmonic at half of full scale on the current channel −38 dB Amplitude of highest spur; input signal is 50 Hz fundamental and 31st harmonic at half of full scale on the current channel Line Period Measurement 0.001 Hz Resolution at 50 Hz Current to Current, Voltage to Voltage, and Voltage to Current Angle Measurement 0.036 Degrees Resolution at 50 Hz; voltage and current at 1/10th of full scale PSM1 IRMS 0.2 % Accuracy achieved 40 ms after entering PSM1 mode at 600:1 |
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