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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADAF1080BCPZ датащи(PDF) 33 Page - Analog Devices |
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ADAF1080BCPZ датащи(HTML) 33 Page - Analog Devices |
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33 / 36 page  Data Sheet ADAF1080 APPLICATIONS INFORMATION analog.com Rev. 0 | 33 of 36 Contactless Current Measurement up to ±640 A Using Three ADAF1080 Sensors in a Ring Architecture Three ADAF1080 sensors can be used in a ring architecture to achieve contactless current measurements up to ±200 A nominal with ±640 A over current detection by measuring the magnetic field generated by a conductor. A reference design of this ring architecture that uses three ADAF1080 sensors is available as the EVAL-ADAF1080-3EBZ customer evaluation board. Figure 59 shows three ADAF1080 devices, G = 80, connected to a summing amplifier and a 14.7 kHz filter to average the output of the three sensors and to minimize error due to mechanical tolerances and nearby magnetic field interference. Figure 59. Design Example with the EVAL-ADAF1080-3EBZ Evaluation Board Table 19. Component Values for the Design Example with the EVAL-ADAF1080-3EBZ Component Description Suggested Part Number U1, U2, U3 Integrated ±8 mT AMR magnetic field sensor and signal conditioner ADAF1080BCPZ AD4002 18-bit, 2 MSPS, precision, pseudo differential, SAR ADC AD4002BRMZ ADA4807 Low noise 180 MHz, rail-to-rail Input/output amplifiers ADA4807-1AKSZ C1, C3, C5 1 µF ceramic capacitors, 16 V, 0603 CGA3E1X7R1C105K080AC C2, C4, C6 0.1 µF ceramic capacitors 08055C104JAT2A C7 2700 pF ceramic capacitor C2012C0G1H272J060AA CFLIP1, CFLIP2, CFLIP3, C8 10 µF ceramic capacitors, 25 V, 0805 GRM21BR61E106KA73L RFLIP1, RFLIP2, RFLIP3 100 Ω resistors, 1/10 W, 1%, 0603, SMD WR06X1000FTL R1, R2, R3 12 kΩ resistors, 1/10 W, 0.1%, 0603, SMD RT0603BRE0712KL R4 4 kΩ resistor, 1/10 W, 0.1%, 0603, SMD RT0603BRD07100KL R5, R6 50 kΩ resistors, 1/10 W, 0.1%, 0603, SMD RT0603BRD0750KL |
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