STM8S005C6 datasheet(80/97 Pages) STMICROELECTRONICS

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Electrical characteristics

STM8S005C6 STM8S005K6

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DocID022186 Rev 4

Table 44. ADC accuracy with RAIN < 10 k, VDDA = 5 V

Symbol

Parameter

Conditions

Typ

Max(1)

Data based on characterization results, not tested in production.

Unit

|ET|

Total unadjusted error (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

I

INJ(PIN) in Section 9.3.6 does not affect the ADC accuracy.

fADC = 2 MHz

1.0

2.5

LSB

fADC = 4 MHz

1.4

fADC = 6 MHz

1.6

3.5

|EO|

Offset error (2)

fADC = 2 MHz

0.6

2.0

fADC = 4 MHz

1.1

2.5

fADC = 6 MHz

1.2

2.5

|EG|

Gain error (2)

fADC = 2 MHz

0.2

fADC = 4 MHz

0.6

2.5

fADC = 6 MHz

0.8

2.5

|ED|

Differential linearity error (2)

fADC = 2 MHz

0.7

1.5

fADC = 4 MHz

0.7

1.5

fADC = 6 MHz

0.8

1.5

|EL|

Integral linearity error (2)

fADC = 2 MHz

0.6

1.5

fADC = 4 MHz

0.6

1.5

fADC = 6 MHz

0.6

1.5

Table 45. ADC accuracy with RAIN < 10 kRAIN, VDDA = 3.3 V

Symbol

Parameter

Conditions

Typ

Max(1)

Data based on characterization results, not tested in production.

Unit

|ET|

Total unadjusted error(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

I

INJ(PIN) in Section 9.3.6 does not affect the ADC accuracy.

fADC = 2 MHz

1.1

2.0

LSB

fADC = 4 MHz

1.6

2.5

|EO|

Offset error(2)

fADC = 2 MHz

0.7

1.5

fADC = 4 MHz

1.3

2.0

|EG|

Gain error(2)

fADC = 2 MHz

0.2

1.5

fADC = 4 MHz

0.5

2.0

|ED|

Differential linearity error(2)

fADC = 2 MHz

0.7

1.0

fADC = 4 MHz

0.7

1.0

|EL|

Integral linearity error(2)

fADC = 2 MHz

0.6

1.5

fADC = 4 MHz

0.6

1.5

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