MC9S12A128 MOTOROLA [Motorola, Inc], MC9S12A128 Datasheet - Page 68
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MC9S12A128
Manufacturer Part Number
MC9S12A128
Description
Microcontroller unit (MCU)
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC9S12A128.pdf
(92 pages)
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A.2.3 ATD Accuracy
Table A-10
input capacitance and source resistance.
For the following definitions see also
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:
Conditions are shown in
V
f
Num C
ATDCLK
NOTES:
1. These values include the quantization error which is inherently 1/2 count for any A/D converter.
REF
1
2
3
4
5
6
7
8
= V
P 10-Bit Resolution
P 10-Bit Differential Nonlinearity
P 10-Bit Integral Nonlinearity
P 10-Bit Absolute Error
P 8-Bit Resolution
P 8-Bit Differential Nonlinearity
P 8-Bit Integral Nonlinearity
P 8-Bit Absolute Error
= 2.0MHz
RH
– V
specifies the ATD conversion performance excluding any errors due to current injection,
RL
= 5.12V. Resulting to one 8 bit count = 20mV and one 10 bit count = 5mV
Table A-4
(1)
(1)
Rating
Table A-10 ATD Conversion Performance
unless otherwise noted
INL n
Figure
DNL i
=
i
=
n
A-1.
1
=
DNL i
V
------------------------- - 1
i
1LSB
Symbol
–
DNL
DNL
LSB
LSB
V
INL
INL
AE
AE
i 1
=
–
V
-------------------- - n
1LSB
n
–
–
V
–2.5
–0.5
–1.0
–1.5
Min
0
–1
–3
—
—
MC9S12A128 Device Guide — V01.01
–
Typ
20
—
1.5
2.0
0.5
1.0
5
Max
2.5
0.5
1.0
1.5
—
—
1
3
Counts
Counts
Counts
Counts
Counts
Counts
Unit
mV
mV
68