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STM32F205RFT6 Datasheet(PDF) 125 Page - STMicroelectronics |
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STM32F205RFT6 Datasheet(HTML) 125 Page - STMicroelectronics |
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125 / 184 page  DocID15818 Rev 15 125/184 STM32F20xxx Electrical characteristics 183 6.3.20 12-bit ADC characteristics Unless otherwise specified, the parameters given in Table 66 are derived from tests performed under the ambient temperature, fPCLK2 frequency and VDDA supply voltage conditions summarized in Table 14. Table 66. ADC characteristics Symbol Parameter Conditions Min Typ Max Unit VDDA Power supply - 1.8(1) -3.6 V VREF+ Positive reference voltage - 1.8(1)(2) -VDDA V fADC ADC clock frequency VDDA = 1.8(1) to 2.4 V 0.6 - 15 MHz VDDA = 2.4 to 3.6 V 0.6 - 30 MHz fTRIG(3) External trigger frequency fADC = 30 MHz with 12-bit resolution - - 1764 kHz -- - 17 1/fADC VAIN Conversion voltage range(4) - 0 (VSSA or VREF- tied to ground) -VREF+ V RAIN(3) External input impedance See Equation 1 for details -- 50 k Ω RADC(3)(5) Sampling switch resistance - 1.5 - 6 k Ω CADC(3) Internal sample and hold capacitor -- 4 - pF tlat(3) Injection trigger conversion latency fADC = 30 MHz - - 0.100 µs -- - 3(6) 1/fADC tlatr(3) Regular trigger conversion latency fADC = 30 MHz - - 0.067 µs -- - 2(6) 1/fADC tS(3) Sampling time fADC = 30 MHz 0.100 - 16 µs - 3 - 480 1/fADC tSTAB(3) Power-up time - - 2 3 µs tCONV(3) Total conversion time (including sampling time) fADC = 30 MHz 12-bit resolution 0.5 - 16.40 µs fADC = 30 MHz 10-bit resolution 0.43 - 16.34 µs fADC = 30 MHz 8-bit resolution 0.37 - 16.27 µs fADC = 30 MHz 6-bit resolution 0.3 - 16.20 µs 9 to 492 (tS for sampling +n-bit resolution for successive approximation) 1/fADC |
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