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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F303 датащи(PDF) 108 Page - STMicroelectronics |
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STM32F303 датащи(HTML) 108 Page - STMicroelectronics |
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108 / 133 page  Electrical characteristics STM32F302xx/STM32F303xx 108/133 Doc ID 023353 Rev 5 SNR Signal-to- noise ratio ADC clock freq. ≤ 72 MHz Sampling freq ≤ 5 Msps VDDA = VREF+ = 3.3 V 25°C Single ended Fast channel 5.1 Ms 64 67 - dB Slow channel 4.8 Ms 65 67 - Differential Fast channel 5.1 Ms 68 70 - Slow channel 4.8 Ms 69 70 - THD Total harmonic distortion Single ended Fast channel 5.1 Ms - −75 −72 Slow channel 4.8 Ms - −72 −70 Differential Fast channel 5.1 Ms - −80 −74 Slow channel 4.8 Ms - −76 −71 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 6.3.14 does not affect the ADC accuracy. 3. Data based on characterization results, not tested in production. Table 68. ADC accuracy - limited test conditions (1)(2) (continued) Symbol Parameter Conditions Min (3) Typ Max(3) Unit |
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