Electrical characteristics
STM32F302xx/STM32F303xx
Min
(1)(2)
Table 68. ADC accuracy - limited test conditions
(continued)
Symbol Parameter
Conditions
Typ Max(3) Unit
(3)
Fast channel 5.1 Ms
Slow channel 4.8 Ms
Fast channel 5.1 Ms
Slow channel 4.8 Ms
64
65
68
69
67
67
70
70
-
-
-
Single ended
Signal-to-
SNR
ADC clock freq. ≤ 72
noise ratio
MHz
Sampling freq ≤ 5
Differential
dB
Msps
-
VDDA = VREF+ = 3.3 V
25°C
Fast channel 5.1 Ms
Slow channel 4.8 Ms
Fast channel 5.1 Ms
Slow channel 4.8 Ms
-
-
-
-
−75
−72
−80
−76
−72
−70
−74
−71
Single ended
Differential
Total
THD
harmonic
distortion
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 IINJ(PIN) and ΣIINJ(PIN) in Section 6.3.14 does not affect the ADC
accuracy.
3. Data based on characterization results, not tested in production.
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Doc ID 023353 Rev 5
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