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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32L452VC датащи(PDF) 148 Page - STMicroelectronics |
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STM32L452VC датащи(HTML) 148 Page - STMicroelectronics |
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148 / 210 page  Electrical characteristics STM32L452xx 148/210 DocID029968 Rev 3 6.3.17 Analog-to-Digital converter characteristics Unless otherwise specified, the parameters given in Table 76 are preliminary values derived from tests performed under ambient temperature, fPCLK frequency and VDDA supply voltage conditions summarized in Table 23: General operating conditions. Note: It is recommended to perform a calibration after each power-up. Table 76. ADC characteristics(1) (2) Symbol Parameter Conditions Min Typ Max Unit VDDA Analog supply voltage - 1.62 - 3.6 V VREF+ Positive reference voltage VDDA ≥ 2 V 2 - VDDA V VDDA < 2 V VDDA V VREF- Negative reference voltage -VSSA V fADC ADC clock frequency Range 1 0.14 - 80 MHz Range 2 0.14 - 26 fs Sampling rate for FAST channels Resolution = 12 bits - - 5.33 Msps Resolution = 10 bits - - 6.15 Resolution = 8 bits - - 7.27 Resolution = 6 bits - - 8.88 Sampling rate for SLOW channels Resolution = 12 bits - - 4.21 Resolution = 10 bits - - 4.71 Resolution = 8 bits - - 5.33 Resolution = 6 bits - - 6.15 fTRIG External trigger frequency fADC = 80 MHz Resolution = 12 bits - - 5.33 MHz Resolution = 12 bits - - 15 1/fADC VCMIN Input common mode Differential mode (VREF++ VREF-)/2 - 0.18 (VREF++ VREF-)/2 (VREF++ VREF-)/2 + 0.18 V VAIN (3) Conversion voltage range(2) -0 - VREF+ V RAIN External input impedance - - - 50 kΩ CADC Internal sample and hold capacitor -- 5 - pF tSTAB Power-up time - 1 conversion cycle tCAL Calibration time fADC = 80 MHz 1.45 µs -116 1/fADC |
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