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ST92F124 датащи(PDF) 401 Page - STMicroelectronics |
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ST92F124 датащи(HTML) 401 Page - STMicroelectronics |
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401 / 426 page ![]() 401/426 ST92F124/F150/F250 - ELECTRICAL CHARACTERISTICS 10-BIT ADC CHARACTERISTICS (Cont’d) ADC Accuracy (VDD=5V+/-10%, TA=-40°C to +125°C) 1. Typical data is based on TA=25°C, Vdd=5V 2. Monotonicity and No Missing Codes are guaranteed by design. 3. Refer to Figure 162. for the definition of these parameters. Figure 162. ADC Accuracy Characteristics Symbol Parameter Conditions Typ 1) Max Unit Monotonicity Guaranteed 2) No missing codes Guaranteed 2) |Et| Total unadjusted error 3) fADC = 4MHz 1.5 6 LSB |Eo| Offset error 3) 15.5 |Eg| Gain Error 3) 1.5 6 |Ed| Differential linearity error 3) 0.5 1.5 |El| Integral linearity error 3) 0.5 1.5 EO EG 1LSBIDEAL 1LSB IDEAL AVDD AVSS – 1024 ----------------------------------------- = Vin (LSBIDEAL) (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. Digital Result DiHR/DiLR 1023 1022 1021 5 4 3 2 1 0 7 6 1 2 3 4567 1021 1022 1023 1024 (1) (2) ET ED EL (3) AVDD AVSS 1 |
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