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STM32G474PBY6XXX 数据表(PDF) 145 Page - STMicroelectronics |
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STM32G474PBY6XXX 数据表(HTML) 145 Page - STMicroelectronics |
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145 / 236 page  DS12288 Rev 5 145/236 STM32G474xB STM32G474xC STM32G474xE Electrical characteristics 200 THD Total harmonic distortion Single ADC operation ADC clock frequency ≤ 60 MHz, VDDA = VREF+ = 3 V, TA = 25 °C Continuous mode, sampling rate: Fast channels@4Msps Slow channels@2Msps Single ended Fast channel (max speed) - -73 -72 dB Slow channel (max speed) - -73 -72 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 enabled when VDDA < 2.4 V (BOOSTEN = 1 in the SYSCFG_CFGR1 when VDDA < 2.4 V). It is disabled when VDDA ≥ 2.4 V. No oversampling. Table 68. ADC accuracy - limited test conditions 1(1)(2)(3) (continued) Symbol Parameter Conditions(4) Min Typ Max Unit |
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