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S9S12C128F0MFUE Datasheet, PDF (661/690 Pages) Freescale Semiconductor, Inc – Reference Manual | |||
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Appendix A Electrical Characteristics
A.2.5 ATD Accuracy (3.3V Range)
Table A-13 speciï¬es the ATD conversion performance excluding any errors due to current injection, input
capacitance and source resistance.
Table A-13. ATD Conversion Performance
Conditions are shown in Table A-4 unless otherwise noted
VREF = VRH - VRL = 3.328V. Resulting to one 8 bit count = 13mV and one 10 bit count = 3.25mV
fATDCLK = 2.0MHz
Num C
Rating
Symbol
Min
Typ
1
P 10-Bit Resolution
LSB
â
3.25
2
P 10-Bit Differential Nonlinearity
DNL
â1.5
â
3
P 10-Bit Integral Nonlinearity
4
P 10-Bit Absolute Error(1)
INL
â3.5
±1.5
AE
â5
±2.5
5
P 8-Bit Resolution
LSB
â
13
6
P 8-Bit Differential Nonlinearity
DNL
â0.5
â
7
P 8-Bit Integral Nonlinearity
INL
â1.5
±1
8
P 8-Bit Absolute Error1
AE
â2.0
±1.5
1. These values include the quantization error which is inherently 1/2 count for any A/D converter.
Max
Unit
â
mV
1.5
Counts
3.5
Counts
5
Counts
â
mV
0.5
Counts
1.5
Counts
2.0
Counts
For the following deï¬nitions see also Figure A-1.
Differential Non-Linearity (DNL) is deï¬ned as the difference between two adjacent switching steps.
DNL(i) = V-----i--1-â--L---V-S---iB---â-----1- â 1
The Integral Non-Linearity (INL) is deï¬ned as the sum of all DNLs:
n
â INL(n) =
DNL(i) = V----1-n--L---â-S---VB-----0- â n
i=1
Freescale Semiconductor
MC9S12C-Family / MC9S12GC-Family
661
Rev 01.24
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