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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32H757AI датащи(PDF) 193 Page - STMicroelectronics |
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STM32H757AI датащи(HTML) 193 Page - STMicroelectronics |
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193 / 251 page  DS12931 Rev 1 193/251 STM32H757xI Electrical characteristics 230 Figure 44. ADC accuracy characteristics (12-bit resolution) 1. Example of an actual transfer curve. 2. Ideal transfer curve. 3. End point correlation line. 4. 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 45. Typical connection diagram using the ADC 1. Refer to Table 99 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. ai14395c EO EG 1L SBIDEAL 4095 4094 4093 5 4 3 2 1 0 7 6 1 2 3 456 7 4093 4094 4095 4096 (1) (2) ET ED EL (3) VDDA VSSA V REF+ 4096 (or depending on package)] V DDA 4096 [1LSB IDEAL= ai17534b STM32 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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