Datasheet

UnitMax
(1)
TypConditionsParameterSymbol
2.51.5f
ADC
= 4 MHz
31.3f
ADC
= 2 MHzGain error
(2)
|E
G
|
32f
ADC
= 4 MHz
10.7f
ADC
= 2 MHzDifferential linearity error
(2)
|E
D
|
1.50.7f
ADC
= 4 MHz
1.50.6f
ADC
= 2 MHzIntegral linearity error
(2)
|E
L
|
20.8f
ADC
= 4 MHz
(1)
Data based on characterization results, not tested in production.
(2)
ADC accuracy vs. negative injection current: Injecting negative current on any of the
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 standard 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 I/O port
pin characteristics does not affect the ADC accuracy.
Figure 43: ADC accuracy characteristics
1. Example of an actual transfer curve.
2. The ideal transfer curve
89/117DocID15441 Rev 9
Electrical characteristicsSTM8S103K3 STM8S103F3 STM8S103F2