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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32L471VG датащи(PDF) 156 Page - STMicroelectronics |
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STM32L471VG датащи(HTML) 156 Page - STMicroelectronics |
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156 / 218 page  Electrical characteristics STM32L471xx 156/218 DocID027226 Rev 1 THD Total harmonic distortion ADC clock frequency ≤ 26 MHz, 1.65 V ≤ VDDA = VREF+ ≤ 3.6 V, Voltage scaling Range 2 Single ended Fast channel (max speed) - -71 -69 dB Slow channel (max speed) - -71 -69 Differential Fast channel (max speed) - -73 -72 Slow channel (max speed) - -73 -72 1. Guaranteed by design. 2. ADC DC accuracy values are measured after internal calibration. 3. 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. 4. The I/O analog switch voltage booster is enable when VDDA < 2.4 V (BOOSTEN = 1 in the SYSCFG_CFGR1 when VDDA < 2.4 V). It is disable when VDDA ≥ 2.4 V. No oversampling. Table 68. ADC accuracy - limited test conditions 4(1)(2)(3) (continued) Sym- bol Parameter Conditions(4) Min Typ Max Unit |
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