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STM32L431 Datasheet(PDF) 139 Page - STMicroelectronics

Part # STM32L431
Description  RTC with HW calendar, alarms and calibration
PDF  200 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L431 Datasheet(HTML) 139 Page - STMicroelectronics

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STM32L431xx
Electrical characteristics
168
THD
Total
harmonic
distortion
ADC clock frequency ≤
80 MHz,
Sampling rate ≤ 5.33 Msps,
2 V ≤ VDDA
Single
ended
Fast channel (max speed)
-
-74
-65
dB
Slow channel (max speed)
-
-74
-67
Differential
Fast channel (max speed)
-
-79
-70
Slow channel (max speed)
-
-79
-71
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 enable when VDDA < 2.4 V (BOOSTEN = 1 in the SYSCFG_CFGR1 when
VDDA < 2.4 V). It is disable when VDDA ≥ 2.4 V. No oversampling.
Table 67. ADC accuracy - limited test conditions 2(1)(2)(3) (continued)
Sym-
bol
Parameter
Conditions(4)
Min Typ Max Unit



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