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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TSC2010H датащи(PDF) 25 Page - STMicroelectronics |
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TSC2010H датащи(HTML) 25 Page - STMicroelectronics |
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25 / 50 page  So due to the architecture of the TSC2011H, the current to be measured must be much larger than the input bias current. In case of small current to measure the Iib current must be taken into account. Figure 55. Input bias current vs. common mode voltage Vcc = 5 V -20 -10 0 10 20 30 40 50 60 70 -600 -500 -400 -300 -200 -100 0 100 200 300 400 500 600 Iibp Vref=Vcc/2 Vsense=0V Vcc=5V Iibn Vicm (V) • Gnd < Vicm < Vcc In this manner, the TSC2011H is only powered by the power supply Vcc, and the iib currents are very close to 0 µA and do not have any impact on the current measurement. • -20 V < Vicm < Gnd The TSC2011H is fully functional in this range of common mode voltage and has also been characterized. As the high positive common mode voltage, in this specific range, the TSC2011H is also powered by the input, see Figure 3. Figure 56. Power supply when Vicm < Gnd TSC2010H, TSC2011H, TSC2012H Theory of operation DS13791 - Rev 1 page 25/50 |
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