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STM32F303VC 数据表(PDF) 111 Page - STMicroelectronics |
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STM32F303VC 数据表(HTML) 111 Page - STMicroelectronics |
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111 / 133 page  STM32F302xx/STM32F303xx Electrical characteristics Doc ID 023353 Rev 5 111/133 Figure 33. Typical connection diagram using the ADC 1. Refer to Table 66 for the values of RAIN. 2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the pad capacitance (roughly 7 pF). A high Cparasitic value will downgrade conversion accuracy. To remedy this, fADC should be reduced. General PCB design guidelines Power supply decoupling should be performed as shown in Figure 11. The 10 nF capacitor should be ceramic (good quality) and it should be placed as close as possible to the chip. AINx IL±1 μA 0.6 V VT RAIN(1) Cparasitic VAIN 0.6 V VT RADC 12-bit converter CADC Sample and hold ADC converter |
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