STM32L432KB Datasheet, PDF (120/149 Pages) STMicroelectronics – Batch acquisition mode

Electrical characteristics
STM32L432KB STM3L432KC
Table 66. ADC accuracy - limited test conditions 4^(1)(2)(3) (continued)
Sym-
bol
Parameter
Conditions⁽⁴⁾
Min Typ Max Unit
ADC clock frequency ≤
Single
Fast channel (max speed) - -71 -69
Total
26 MHz,
ended
Slow channel (max speed) - -71 -69
THD harmonic
distortion
1.65 V ≤ V_DDA = VREF+ ≤
3.6 V,
Voltage scaling Range 2
Fast channel (max speed)
Differential
Slow channel (max speed)
-
-
dB
-73 -72
-73 -72
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
V_DDA <
analog
2.4 V).
switch voltage booster is
It is disable when V_DDA ≥
e2n.4abVl.eNwohoevneVrs_{DaDmAp<lin2g.4.}
V
(BOOSTEN
=
1
in
the
SYSCFG_CFGR1
when
Figure 20. ADC accuracy characteristics
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