Datasheet

Electrical Characteristics
S12XS Family Reference Manual, Rev. 1.13
Freescale Semiconductor 675
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.
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 resistance
1
1
Refer to A.2.2.2 for further information concerning source resistance
R
S
—— 1KΩ
2 D Total input capacitance Non sampling
Total input capacitance Sampling
C
INN
C
INS
—
—
—
—
10
16
pF
3 D Input internal Resistance
R
INA
— 5 15 kΩ
4 C Disruptive analog input current I
NA
–2.5 — 2.5 mA
5 C Coupling ratio positive current injection K
p
— — 1E-4 A/A
6 C Coupling ratio negative current injection K
n
— — 3E-3 A/A