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STM32L152C6 データシート(PDF) 96 Page - STMicroelectronics |
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STM32L152C6 データシート(HTML) 96 Page - STMicroelectronics |
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96 / 131 page  Electrical characteristics STM32L151x6/8/B, STM32L152x6/8/B 96/131 DocID17659 Rev 9 Table 55. ADC accuracy(1)(2) Symbol Parameter Test conditions Min(3) Typ Max(3) Unit ET Total unadjusted error 2.4 V ≤ VDDA ≤ 3.6 V 2.4 V ≤ VREF+ ≤ 3.6 V fADC = 8 MHz, RAIN = 50 Ω TA = -40 to 105 °C -2 4 LSB EO Offset error - 1 2 EG Gain error - 1.5 3.5 ED Differential linearity error - 1 2 EL Integral linearity error - 1.7 3 ENOB Effective number of bits 2.4 V ≤ VDDA ≤ 3.6 V VDDA = VREF+ fADC = 16 MHz, RAIN = 50 Ω TA = -40 to 105 °C 1 kHz ≤ Finput ≤ 100 kHz 9.2 10 - bits SINAD Signal-to-noise and distortion ratio 57.5 62 - dB SNR Signal-to-noise ratio 57.5 62 - THD Total harmonic distortion -74 -75 - ET Total unadjusted error 2.4 V ≤ VDDA ≤ 3.6 V 1.8 V ≤ VREF+ ≤ 2.4 V fADC = 4 MHz, RAIN = 50 Ω TA = -40 to 105 °C -4 6.5 LSB EO Offset error - 2 4 EG Gain error - 4 6 ED Differential linearity error - 1 2 EL Integral linearity error - 1.5 3 ET Total unadjusted error 1.8 V ≤ VDDA ≤ 2.4 V 1.8 V ≤ VREF+ ≤ 2.4 V fADC = 4 MHz, RAIN = 50 Ω TA = -40 to 105 °C -2 3 LSB EO Offset error - 1 1.5 EG Gain error - 1.5 2 ED Differential linearity error - 1 2 EL Integral linearity error - 1 1.5 1. ADC DC accuracy values are measured after internal calibration. 2. ADC accuracy vs. negative injection current: Injecting a 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 currents. Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) in Section 6.3.12 does not affect the ADC accuracy. 3. Based on characterization, not tested in production. |
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