Electrical characteristics
STM8S003K3 STM8S003F3
Symbol Parameter
Conditions
Typ
Max(1) Unit
fADC = 4 MHz
1.5
2.5
|EG|
|ED|
|EL|
Gain error(2)
fADC = 2 MHz
fADC = 4 MHz
fADC = 2 MHz
fADC = 4 MHz
fADC = 2 MHz
fADC = 4 MHz
1.3
2
3
3
Differential linearity error(2)
Integral linearity error(2)
0.7
0.7
0.6
0.8
1
1.5
1.5
2
(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 IINJ(PIN) and ΣIINJ(PIN) in I/O port
pin characteristics does not affect the ADC accuracy.
Figure 42: ADC accuracy characteristics
1. Example of an actual transfer curve.
2. The ideal transfer curve
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STMICROELECTRONICS [ ST ]
