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STM32F303RE 数据表(PDF) 138 Page - STMicroelectronics |
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STM32F303RE 数据表(HTML) 138 Page - STMicroelectronics |
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138 / 173 page  Electrical characteristics STM32F303xD STM32F303xE 138/173 DocID026415 Rev 5 SNR(4) Signal-to- noise ratio ADC clock freq. ≤ 72 MHz Sampling freq ≤ 5 Msps VDDA = VREF+ = 3.3 V 25°C 100-pin/144-pin package Single ended Fast channel 5.1 Ms 66 67 - dB Slow channel 4.8 Ms 66 67 - Differential Fast channel 5.1 Ms 69 70 - Slow channel 4.8 Ms 69 70 - THD(4) Total harmonic distortion Single ended Fast channel 5.1 Ms - -76 -76 Slow channel 4.8 Ms - -76 -76 Differential Fast channel 5.1 Ms - -80 -80 Slow channel 4.8 Ms - -80 -80 1. ADC DC accuracy values are measured after internal calibration. 2. ADC accuracy vs. negative Injection Current: Injecting negative current on any analog input pins should be avoided as this significantly reduces the accuracy of the conversion being performed on another analog input. It is recommended to add a Schottky diode (pin to ground) to analog pins which may potentially inject negative current. Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) in Section 6.3.15 does not affect the ADC accuracy. 3. Data based on characterization results, not tested in production. 4. Value measured with a -0.5 dB full scale 50 kHz sine wave input signal. Table 81. ADC accuracy - limited test conditions, 100-/144-pin packages (1)(2) (continued) Symbol Parameter Conditions Min (3) Typ Max (3) Unit Table 82. ADC accuracy, 100-pin/144-pin packages(1)(2)(3) Symbol Parameter Conditions Min (4) Max(4) Unit ET Total unadjusted error ADC clock freq. ≤ 72 MHz, Sampling freq. ≤ 5 Msps 2.0 V ≤ VDDA, VREF+ ≤ 3.6 V 100-pin/144-pin package Single Ended Fast channel 5.1 Ms - ±6.5 LSB Slow channel 4.8 Ms - ±6.5 Differential Fast channel 5.1 Ms - ±4 Slow channel 4.8 Ms - ±4 EO Offset error Single Ended Fast channel 5.1 Ms - ±3 Slow channel 4.8 Ms - ±3 Differential Fast channel 5.1 Ms - ±2 Slow channel 4.8 Ms - ±2 EG Gain error Single Ended Fast channel 5.1 Ms - ±6 Slow channel 4.8 Ms - ±6 Differential Fast channel 5.1 Ms - ±3 Slow channel 4.8 Ms - ±3 ED Differential linearity error Single Ended Fast channel 5.1 Ms - ±1.5 Slow channel 4.8 Ms - ±1.5 Differential Fast channel 5.1 Ms - ±1.5 Slow channel 4.8 Ms - ±1.5 |
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