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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F407IG датащи(PDF) 127 Page - STMicroelectronics |
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STM32F407IG датащи(HTML) 127 Page - STMicroelectronics |
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127 / 180 page  STM32F405xx, STM32F407xx Electrical characteristics Doc ID 022152 Rev 3 127/180 Figure 48. ADC accuracy characteristics 1. See also Table 68. 2. Example of an actual transfer curve. 3. Ideal transfer curve. 4. End point correlation line. 5. ET = Total Unadjusted Error: maximum deviation between the actual and the ideal transfer curves. EO = Offset Error: deviation between the first actual transition and the first ideal one. EG = Gain Error: deviation between the last ideal transition and the last actual one. ED = Differential Linearity Error: maximum deviation between actual steps and the ideal one. EL = Integral Linearity Error: maximum deviation between any actual transition and the end point correlation line. Figure 49. Typical connection diagram using the ADC 1. Refer to Table 67 for the values of RAIN, RADC and CADC. 2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the pad capacitance (roughly 5 pF). A high Cparasitic value downgrades conversion accuracy. To remedy this, fADC should be reduced. ai17534 STM32F VDD AINx IL±1 µA 0.6 V VT RAIN(1) Cparasitic VAIN 0.6 V VT RADC(1) CADC(1) 12-bit converter Sample and hold ADC converter |
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