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STM8L052C6 датащи(PDF) 91 Page - STMicroelectronics |
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STM8L052C6 датащи(HTML) 91 Page - STMicroelectronics |
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91 / 102 page ![]() STM8L052C6 Electrical parameters Doc ID 023331 Rev 1 91/102 Figure 33. ADC1 accuracy characteristics Figure 34. Typical connection diagram using the ADC 1. Refer to Table 44 for the values of RAIN and CADC. 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. EO EG 1LSBIDEAL (1) Example of an actual transfer curve (2) The ideal transfer curve (3) End point correlation line 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. 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 ai14395b VREF+ 4096 (or depending on package)] VDDA 4096 [1LSBIDEAL = ai17090e STM8L05xxx VDD AINx IL±50 nA 0.6 V VT RAIN(1) Cparasitic VAIN 0.6 V VT RADC CADC(1) 12-bit converter Sample and hold ADC converter |
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