Freescale Semiconductor MC9S12ZVHL32, Reference Manual

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Appendix B ADC Electricals
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor 791
B.1.2 ADC Accuracy
Table B-3. specifies the ADC conversion performance excluding any errors due to current injection,
input capacitance and source resistance.
B.1.2.1 ADC Accuracy Definitions
For the following definitions see also Figure B-1.
Differential non-linearity (DNL) is defined as the difference between two adjacent switching steps.
The integral non-linearity (INL) is defined as the sum of all DNLs:
DNL i
 
Vi Vi 1
–
–
1LSB
-------------------------- 1
– =
INL n
 
DNL i
 
i 1 =
n

Vn V0 –
1LSB
--------------------- n
– = =