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ADE7978 数据表(PDF) 7 Page - Analog Devices |
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ADE7978 数据表(HTML) 7 Page - Analog Devices |
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7 / 120 page  Data Sheet ADE7978/ADE7933/ADE7932 Rev. 0 | Page 7 of 120 SPECIFICATIONS SYSTEM SPECIFICATIONS, ADE7978 AND ADE7933/ADE7932 VDD = 3.3 V ± 10%, GND = DGND = 0 V, ADE7978 XTALIN = 16.384 MHz, TMIN to TMAX = −40°C to +85°C, TTYP = 25°C. Table 1. Parameter1, 2 Min Typ Max Unit Test Conditions/Comments ACTIVE ENERGY MEASUREMENT Measurement Error (per Phase) Total Active Energy 0.1 % Over a dynamic range of 500 to 1, power factor (PF) = 1, gain compensation only 0.2 % Over a dynamic range of 2000 to 1, PF = 1 Fundamental Active Power 0.1 % Over a dynamic range of 500 to 1, PF = 1, gain compensation only 0.2 % Over a dynamic range of 2000 to 1, PF = 1 AC Power Supply Rejection VDD = 3.3 V + 120 mV rms at 50 Hz/100 Hz, IP = 6.25 mV rms, V1P = V2P = 100 mV rms Output Frequency Variation 0.01 % DC Power Supply Rejection VDD = 3.3 V ± 330 mV dc, IP = 6.25 mV rms, V1P = V2P = 100 mV rms Output Frequency Variation 0.01 % Total Active Energy Measurement Bandwidth 3.3 kHz REACTIVE ENERGY MEASUREMENT Measurement Error (per Phase) Total Reactive Power 0.1 % Over a dynamic range of 500 to 1, PF = 0, gain compensation only 0.2 % Over a dynamic range of 2000 to 1, PF = 0 Fundamental Reactive Power 0.1 % Over a dynamic range of 500 to 1, PF = 0, gain compensation only 0.2 % Over a dynamic range of 2000 to 1, PF = 0 AC Power Supply Rejection VDD = 3.3 V + 120 mV rms at 50 Hz/100 Hz, IP = 6.25 mV rms, V1P = V2P = 100 mV rms Output Frequency Variation 0.01 % DC Power Supply Rejection VDD = 3.3 V ± 330 mV dc, IP = 6.25 mV rms, V1P = V2P = 100 mV rms Output Frequency Variation 0.01 % Total Reactive Energy Measurement Bandwidth 3.3 kHz RMS MEASUREMENTS Measurement Bandwidth 3.3 kHz I rms and V rms V rms Measurement Error 0.1 % Over a dynamic range of 500 to 1 I rms Measurement Error 0.25 % Over a dynamic range of 500 to 1 Fundamental V rms Measurement Error 0.1 % Over a dynamic range of 500 to 1 Fundamental I rms Measurement Error 0.25 % Over a dynamic range of 500 to 1 WAVEFORM SAMPLING Sampling CLKIN/2048 (16.384 MHz/2048 = 8 kSPS) Current Channels See the Waveform Sampling Mode section Signal-to-Noise Ratio, SNR 67 dB Signal-to-Noise-and-Distortion (SINAD) Ratio 67 dB Total Harmonic Distortion, THD −85 dB Spurious-Free Dynamic Range, SFDR 88 dBFS |
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