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Motore di ricerca datesheet componenti elettronici |
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STM32L452VCU6 Scheda tecnica(PDF) 159 Page - STMicroelectronics |
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STM32L452VCU6 Scheda tecnica(HTML) 159 Page - STMicroelectronics |
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159 / 210 page  DocID029968 Rev 3 159/210 STM32L452xx Electrical characteristics 186 Figure 28. ADC accuracy characteristics 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 81. ADC accuracy - limited test conditions 4(1)(2)(3) (continued) Sym- bol Parameter Conditions(4) Min Typ Max Unit |
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