Datasheet

Electrical characteristics STM32F303x6/x8
94/121 DocID025083 Rev 7
Figure 29. ADC accuracy characteristics
Table 65. ADC accuracy
(1)(2)
at 1MSPS
Symbol Parameter Test conditions Typ. Max
(3)
Unit
ET Total unadjusted error
ADC Freq. ≤ 72 MHz
Sampling Freq. ≤ 1MSPS
2 V ≤ V
DDA
= V
REF+
≤ 3.6 V
Single-ended mode
Fast channel ±2.5 ±5
LSB
Slow channel ±3.5 ±5
EO Offset error
Fast channel ±1 ±2.5
Slow channel ±1.5 ±2.5
EG Gain error
Fast channel ±2 ±3
Slow channel ±3 ±4
ED Differential linearity error
Fast channel ±0.7 ± 2
Slow channel ±0.7 ±2
EL Integral linearity error
Fast channel ±1 ±3
Slow channel ±1.2 ±3
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 ∑IINJ(PIN) in Section 6.3.14: I/O port characteristics does not affect the ADC
accuracy.
3. Data based on characterization results, not tested in production.
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