STM8AF61XX Datasheet, PDF (84/100 Pages) STMicroelectronics – Automotive 8-bit MCU, with up to 128 Kbytes Flash, EEPROM, 10-bit ADC, timers, LIN, CAN, USART, SPI, I2C, 3 V to 5.5 V

Electrical characteristics
STM8AF61xx, STM8AF51xx
Table 36. ADC accuracy with R_AIN < 10 kΩ R_AIN, V_DDA = 3.3 V
Symbol
Parameter
Conditions
Typ
Max Unit
|E_T| _{Total unadjusted error}⁽¹⁾
|E_O| _{Offset error}⁽¹⁾
|E_G| _{Gain error}⁽¹⁾
|E_D| _{Differential linearity error}⁽¹⁾
|E_L| _{Integral linearity error}⁽¹⁾
f_ADC = 2 MHz
1.5
TBD⁽¹⁾
1.1
TBD⁽¹⁾
-0.2/0.6 _TBD⁽¹⁾
0.9
TBD⁽¹⁾
1
TBD⁽¹⁾
LSB
1. TBD = To be determined
Table 37. ADC accuracy with R_AIN < 10 kΩ , V_DDA = 5 V
Symbol
Parameter
Conditions
Typ
Max Unit
|E_T| _{Total unadjusted error}⁽¹⁾
1.4
3
|E_O| _{Offset error}⁽¹⁾
0.8
2
|E_G| _{Gain error}⁽¹⁾
f_ADC = 2 MHz
0.1
1
LSB
|E_D| _{Differential linearity error}⁽¹⁾
0.9
2
|E_L| _{Integral linearity error}⁽¹⁾
0.7
2
1. ADC accuracy vs. injection current: Any positive or negative injection current within the limits specified for
I_INJ(PIN) and ΣI_INJ(PIN) in Section 11.3.5 does not affect the ADC accuracy.
Figure 41. ADC accuracy characteristics
1023
1022
1021
7
6
5
4
3
2
1
1LSBIDEAL
=
-V----D-----D----A------^–----V-----S----S-----A--
1024
(2)
E_T
E_G
(3)
(1)
E_O
E_L
E_D
1 LSB_IDEAL
0 _1234567
V_SSA
1021102210231024
V_DDA
1. Example of an actual transfer curve
2. The ideal transfer curve
3. End point correlation line
E_T = Total unadjusted error: Maximum deviation between the actual and the ideal transfer curves.
E_O = Offset error: Deviation between the first actual transition and the first ideal one.
E_G = Gain error: Deviation between the last ideal transition and the last actual one.
E_D = Differential linearity error: Maximum deviation between actual steps and the ideal one.
E_L = Integral linearity error: Maximum deviation between any actual transition and the end point correlation
line.
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