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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F302X6 датащи(PDF) 107 Page - STMicroelectronics |
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STM32F302X6 датащи(HTML) 107 Page - STMicroelectronics |
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107 / 138 page  DocID025147 Rev 6 107/138 STM32F302x6 STM32F302x8 Electrical characteristics 117 SNR(4) Signal-to- noise ratio ADC clock freq. ≤ 72 MHz Sampling freq ≤ 5 Msps VDDA = 3.3 V 25°C Single ended Fast channel 5.1 Ms 66 67 - dB Slow channel 4.8 Ms 66 67 - Differential Fast channel 5.1 Ms 69 70 - Slow channel 4.8 Ms 69 70 - THD(4) Total harmonic distortion Single ended Fast channel 5.1 Ms - -80 -80 Slow channel 4.8 Ms - -78 -77 Differential Fast channel 5.1 Ms - -83 -82 Slow channel 4.8 Ms - -81 -80 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. Guaranteed by characterization results. 4. Value measured with a –0.5dB Full Scale 50kHz sine wave input signal. Table 68. ADC accuracy - limited test conditions(1)(2) (continued) Symbol Parameter Conditions Min (3) Typ Max (3) Unit |
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