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S9S12XS256J0CAL Datasheet, PDF (675/738 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Electrical Characteristics
Table A-15. ATD Electrical Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num C
Rating
Symbol
Min
Typ
Max
Unit
1 C Max input source resistance1
2 D Total input capacitance Non sampling
Total input capacitance Sampling
3 D Input internal Resistance
RS
â
â
1
Kâ¦
CINN
â
â
10
pF
CINS
â
â
16
RINA
â
5
15
kâ¦
4 C Disruptive analog input current
INA
â2.5
â
2.5
mA
5 C Coupling ratio positive current injection
Kp
â
â
1E-4
A/A
6 C Coupling ratio negative current injection
Kn
â
â
3E-3
A/A
1 Refer to A.2.2.2 for further information concerning source resistance
A.2.3 ATD Accuracy
Table A-16 and Table A-17 specifies the ATD conversion performance excluding any errors due to
current injection, input capacitance and source resistance.
S12XS Family Reference Manual, Rev. 1.13
Freescale Semiconductor
675
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