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MC9S12KT256 Datasheet, PDF (570/594 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Table A-15. 3.3V 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
Max
Unit
1 P 10-Bit Resolution
LSB
â
3.25
2 P 10-Bit Differential Nonlinearity
DNL
â1.5
3 P 10-Bit Integral Nonlinearity
4 P 10-Bit Absolute Error1
INL
â3.5
±1.5
AE
â5
±2.5
5 C 10-Bit Absolute Error at fATDCLK= 4MHz
6 P 8-Bit Resolution
AE
â
±7.0
LSB
â
13
7 P 8-Bit Differential Nonlinearity
DNL
â0.5
â
8 P 8-Bit Integral Nonlinearity
9 P 8-Bit Absolute Error1
INL
â1.5
±0.1
AE
â2.0
±1.5
1 These values include the quantization error which is inherently 1/2 count for any A/D converter.
â
mV
1.5
Counts
3.5
Counts
5
Counts
â
Counts
â
mV
â
Counts
1.5
Counts
2.0
Counts
For the following deï¬nitions see also Figure A-2.
Differential Non-Linearity (DNL) is deï¬ned as the difference between two adjacent switching steps.
DNL(i) = V-----i--1-â--L---V-S---i-B--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-----n-----â----V-----0- â n
1LSB
i=1
MC9S12KT256 Data Sheet, Rev 1.15
570
Freescale Semiconductor
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