Datasheet

UnitMax
(1)
TypConditionsParameterSymbol
1.50.7f
ADC
= 6 MHz
1.50.6f
ADC
= 2 MHzIntegral linearity error
(2)
|E
L
|
20.8f
ADC
= 4 MHz
20.8f
ADC
= 6 MHz
(1)
Data based on characterisation 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 the I/O
port pin characteristics section does not affect the ADC accuracy.
Table 49: ADC accuracy with R
AIN
< 10 kΩ R
AIN
, V
DD
= 3.3 V
UnitMax
(1)
TypConditionsParameterSymbol
LSB3.51.6f
ADC
= 2 MHzTotal unadjusted error|E
T
|
41.9f
ADC
= 4 MHz
2.51f
ADC
= 2 MHzOffset error|E
O
|
2.51.5f
ADC
= 4 MHz
31.3f
ADC
= 2 MHzGain error|E
G
|
32f
ADC
= 4 MHz
10.7f
ADC
= 2 MHzDifferential linearity error|E
D
|
1.50.7f
ADC
= 4 MHz
1.50.6f
ADC
= 2 MHzIntegral linearity error|E
L
|
20.8f
ADC
= 4 MHz
(1)
Data based on characterisation results, not tested in production.
87/116DocID15590 Rev 8
Electrical characteristicsSTM8S903K3 STM8S903F3