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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADE9153AACPZ датащи(PDF) 22 Page - Analog Devices |
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ADE9153AACPZ датащи(HTML) 22 Page - Analog Devices |
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22 / 50 page  ADE9153A Data Sheet Rev. 0 | Page 22 of 50 CALIBRATION TIME TO REACH ACCURACY (Seconds) 0.600 0.500 0.400 0.300 0.353 0.200 0.250 0.100 0 50 150 200 1501:1 1001:1 619:1 Figure 41. Speed of Convergence for Autocalibration (Voltage Channel) Based on the Potential Divider Ratio MEASUREMENTS Current Channel The ADE9153A has two current channels. Channel A is optimized for use with a shunt, and Channel B is for use with a current transformer. The current channel datapaths for Channel A and Channel B are shown in Figure 42 and Figure 43, respectively. Current Channel Gain, xIGAIN The ADE9153A provides current gain calibration registers, AIGAIN and BIGAIN, with one register for each channel. The current channel gain varies with xIGAIN, as shown in the following equation: Current Channel Gain = 27 2 1 xIGAIN AI GAIN HPF REFERENCE Σ-∆ MODULATOR IAP IAN VIN VIN SINC4 LPF 4:1 ZERO-CROSSING DETECTION PHASE COMP HPFDIS ZX_SRC_SEL AI_WAV TOTAL ACTIVE AND FUNDAMENTAL REACTIVE POWER CALCULATIONS CURRENT PEAK DETECTION RMS_OC_SRC ONE CYCLE RMS RMS AND VA CALCULATIONS 4kSPS +1V ANALOG INPUT RANGE 0V –1V VIN +1/AI_PGAGAIN ANALOG INPUT RANGE 0V –1/AI_PGAGAIN PGA Figure 42. ADE9153A Current Channel A Datapath BI GAIN HPF REFERENCE Σ-∆ MODULATOR IBP VIN VIN IBN SINC4 LPF 4:1 ZERO-CROSSING DETECTION PHASE COMP INTEGRATOR HPFDIS INTEN_BI ZX_SRC_SEL BI_WAV CURRENT PEAK DETECTION ONE CYCLE RMS RMS_OC_SRC RMS CALCULATIONS 4kSPS +1.9V ANALOG INPUT RANGE 0.9V –0.1V Figure 43. ADE9153A Current Channel B Datapath AVGAIN HPF REFERENCE Σ-∆ MODULATOR VAP VIN VAN SINC4 LPF 4:1 VOLTAGE PEAK DETECTION AV_WAV ZERO-CROSSING DETECTION PHASE COMP HPFDIS ZX_SRC_SEL FUNDAMENTAL AND TOTAL ACTIVE AND REACTIVE POWER CALCULATIONS ONE CYCLE RMS RMS_OC_SRC FUNDAMENTAL AND TOTAL RMS, VA, THD CALCULATIONS 4kSPS VIN 1.3V ANALOG INPUT RANGE 0.8V 0.3V Figure 44. ADE9153A Voltage Channel Datapath |
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