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ADE9078 数据表(PDF) 34 Page - Analog Devices |
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ADE9078 数据表(HTML) 34 Page - Analog Devices |
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34 / 108 page  Data Sheet ADE9078 Rev. 0 | Page 33 of 107 HPF IN IN +1V ANALOG INPUT RANGE 0V –1V ADE9078 PHASE COMP CURRENT RMS (xIRMS) INTEGRATOR IB = –IA–IC ADC_ REDIRECT MUX TOTAL ACTIVE AND REACTIVE POWER CALCULATION FUNDAMENTAL REACTIVE POWER CALCULATION CURRENT PEAK DETECTION TOTAL VA POWER CALCULATION NOT AVAILABLE IN ADE9078 PSM1 NOTE: ACC MODE.ICONSEL ONLY AFFECTS IB CHANNEL CALCULATION CURRENT CHANNEL (IA, IB, IC) ICONSEL* INTEN HPFDIS xIGAINx xIGAIN MTEN IF MTEN = 1, xIGAINx, PHASE COMP CHANGES BASED ON xIRMS, MTTHR_Lx AND MTTHR_Hx 0: xIGAINx = xIGAIN0; PHASE COMP = xPHCAL0 1: xIGAINx = xIGAIN1; PHASE COMP = xPHCAL1 2: xIGAINx = xIGAIN2; PHASE COMP = xPHCAL2 3: xIGAINx = xIGAIN3; PHASE COMP = xPHCAL3 4: xIGAINx = xIGAIN4; PHASE COMP = xPHCAL4 xIRMS xI_PCF 0xFBFF FB90 = –67,110,000 SINC4 OUTPUT (xI_SINC_DAT) DATA RANGE 0x0400 0470 = +67,110,000 0x0471 15C0 = +74,520,000 SINC4 + IIR LPF (xI_LPF_DAT) DATA RANGE 0xFB8E EA40 = –74,520,000 0x0474 E650 = +74,770,000 CURRENT CHANNE L (xI_PCF) DATA RANGE 0xFB8B 19B0 = –74,770,000 Figure 51. Current Channel with Multi-Point Gain and Phase Correction xVGAIN HPF VOLTAGE PEAK DETECTION REFERENCE Σ-∆ MODULATOR VP VIN VIN +1V ANALOG INPUT RANGE 0V –1V VN ADE9078 VOLTAGE CHANNEL SINC4 LPF 4:1 WF_SRC WF_CAP_SEL HPFDIS xV_PCF ADC_ REDIRECT MUX TOTAL ACTIVE AND REACTIVE POWER CALCULATION ZX_SRC_SEL ZX DETECTION TOTAL VOLTAGE RMS VA POWER CALCULATIONS FUNDAMENTAL REACTIVE POWER CALCULATIONS NOTE: CONSEL SUPPORTS SEVERAL 3-WIRE AND 4-WIRE HARDWARE CONFIGURATIONS 100 VA = VA – VB; VB = VA – VC; VC = VC – VB; VB = –VA VB = –VA – VC VB = VA – VC 011 010 001 000 RESAMPLED WAVEFORM DATA RANGE 0V 0V 0V 0xFBFF_FB90 = –67,110,000 0x0471_15C0 = +74,520,000 0x0474_E650 = +74,770,000 0V VOLTAGE CHANNE L (xV_PCF) DATA RANGE SINC4 + IIR LPF (xV_LPF_DAT) DATA RANGE SINC4 OUTPUT (xV_SINC_DAT) DATA RANGE 0x0400_0470 = +67,110,000 0x46B4 = +18,100 0xB94C = –18,100 0xFB8B_19B0 = –74,770,000 0xFB8E_EA40 = –74,520,000 WAVEFORM BUFFER RESAMPLING VCONSEL* 4 kSPS NOT AVAILABLE IN ADE9078 PSM1 Figure 52. Voltage Channel Datapath |
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