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LQFP64 Datasheet(PDF) 80 Page - STMicroelectronics |
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LQFP64 Datasheet(HTML) 80 Page - STMicroelectronics |
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80 / 116 page  Package pinouts and signal descriptions SPC560B40x/50x, SPC560C40x/50x 80/116 DocID14619 Rev 13 3.26 ADC electrical characteristics 3.26.1 Introduction The device provides a 10-bit Successive Approximation Register (SAR) analog-to-digital converter. Figure 18. ADC characteristic and error definitions 3.26.2 Input impedance and ADC accuracy In the following analysis, the input circuit corresponding to the precise channels is considered. (2) (1) (3) (4) (5) Offset error (EO) Offset error (EO) Gain error (EG) 1 LSB (ideal) 1023 1022 1021 1020 1019 1018 5 4 3 2 1 0 7 6 1 2 3 4 5 6 7 1017 1018 1019 1020 1021 1022 1023 (1) Example of an actual transfer curve (2) The ideal transfer curve (3) Differential non-linearity error (DNL) (4) Integral non-linearity error (INL) (5) Center of a step of the actual transfer curve 1 LSB ideal = VDD_ADC / 1024 Vin(A) (LSBideal) code out |
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