Datasheet

Electrical characteristics STM32F303xB STM32F303xC
108/133 DocID023353 Rev 7
SNR
Signal-to-
noise ratio
ADC clock freq.  72 MHz
Sampling freq  5 Msps
V
DDA
= V
REF+
= 3.3 V
25°C
Single ended
Fast channel 5.1 Ms 64 67 -
dB
Slow channel 4.8 Ms 65 67 -
Differential
Fast channel 5.1 Ms 68 70 -
Slow channel 4.8 Ms 69 70 -
THD
To ta l
harmonic
distortion
Single ended
Fast channel 5.1 Ms - -75 -72
Slow channel 4.8 Ms - -72 -70
Differential
Fast channel 5.1 Ms - -80 -74
Slow channel 4.8 Ms - -76 -71
1. ADC DC accuracy values are measured after internal calibration.
2. 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.
Any positive injection current within the limits specified for I
INJ(PIN)
and I
INJ(PIN)
in Section 6.3.14 does not affect the ADC
accuracy.
3. Data based on characterization results, not tested in production.
Table 68. ADC accuracy - limited test conditions
(1)(2)
(continued)
Symbol Parameter Conditions
Min
(3)
Typ
Max
(3)
Unit