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STM32L552CEU6PTR 数据表(PDF) 250 Page - STMicroelectronics |
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STM32L552CEU6PTR 数据表(HTML) 250 Page - STMicroelectronics |
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250 / 340 page  Electrical characteristics STM32L552xx 250/340 DS12737 Rev 6 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 114. ADC accuracy - limited test conditions 4(1)(2)(3) (continued) Sym- bol Parameter Conditions(4) Min Typ Max Unit |
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