Datasheet

Electrical characteristics STM8S105x4/6
86/121 DocID14771 Rev 15
Table 45. ADC accuracy with R
AIN
< 10 k, V
DDA
= 5 V
Symbol Parameter Conditions Typ
Max
(1)
1. Data based on characterization results, not tested in production.
Unit
|E
T
| Total unadjusted error
(2)
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
I
INJ(PIN)
in Section 10.3.6 does not affect the ADC accuracy.
f
ADC
= 2 MHz
1.0 2.5
LSB
f
ADC
= 4 MHz
1.4 3.0
f
ADC
= 6 MHz
1.6 3.5
|E
O
| Offset error
(2)
f
ADC
= 2 MHz
0.6 2.0
f
ADC
= 4 MHz
1.1 2.5
f
ADC
= 6 MHz
1.2 2.5
|E
G
| Gain error
(2)
f
ADC
= 2 MHz
0.2 2.0
f
ADC
= 4 MHz
0.6 2.5
f
ADC
= 6 MHz
0.8 2.5
|E
D
| Differential linearity error
(2)
f
ADC
= 2 MHz
0.7 1.5
f
ADC
= 4 MHz
0.7 1.5
f
ADC
= 6 MHz
0.8 1.5
|E
L
| Integral linearity error
(2)
f
ADC
= 2 MHz
0.6 1.5
f
ADC
= 4 MHz
0.6 1.5
f
ADC
= 6 MHz
0.6 1.5
Table 46. ADC accuracy with R
AIN
< 10 k, V
DDA
= 3.3 V
Symbol Parameter Conditions Typ
Max
(1)
1. Data based on characterization results, not tested in production.
Unit
|E
T
| Total unadjusted error
(2)
f
ADC
= 2 MHz
1.1 2.0
LSB
f
ADC
= 4 MHz
1.6 2.5
|E
O
| Offset error
(2)
f
ADC
= 2 MHz
0.7 1.5
f
ADC
= 4 MHz
1.3 2.0
|E
G
| Gain error
(2)
f
ADC
= 2 MHz
0.2 1.5
f
ADC
= 4 MHz
0.5 2.0
|E
D
| Differential linearity error
(2)
f
ADC
= 2 MHz
0.7 1.0
f
ADC
= 4 MHz
0.7 1.0
|E
L
| Integral linearity error
(2)
f
ADC
= 2 MHz
0.6 1.5
f
ADC
= 4 MHz
0.6 1.5
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.