Datasheet

DocID025147 Rev 7 107/138
STM32F302x6 STM32F302x8 Electrical characteristics
117
SNR
(4)
Signal-to-
noise ratio
ADC clock freq. ≤ 72 MHz
Sampling freq ≤ 5 Msps
V
DDA
= 3.3 V
25°C
Single ended
Fast channel 5.1 Ms 66 67 -
dB
Slow channel 4.8 Ms 66 67 -
Differential
Fast channel 5.1 Ms 69 70 -
Slow channel 4.8 Ms 69 70 -
THD
(4)
To ta l
harmonic
distortion
Single ended
Fast channel 5.1 Ms - -80 -80
Slow channel 4.8 Ms - -78 -77
Differential
Fast channel 5.1 Ms - -83 -82
Slow channel 4.8 Ms - -81 -80
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 ΣI
INJ(PIN)
in Section 6.3.14 does not affect the ADC
accuracy.
3. Guaranteed by characterization results.
4. Value measured with a –0.5dB Full Scale 50kHz sine wave input signal.
Table 68. ADC accuracy - limited test conditions
(1)(2)
(continued)
Symbol Parameter Conditions
Min
(3)
Typ
Max
(3)
Unit
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