Datasheet

Appendix A Electrical Characteristics
MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor 1223
Table A-17. ATD Conversion Performance 5V range
Table A-18. ATD Conversion Performance 3.3V range
Conditions are shown in Table A-4. unless otherwise noted. V
REF
= V
RH
- V
RL
= 5.12V. f
ATDCLK
= 8.3MHz
The values are tested to be valid with no PortAD output drivers switching simultaneous with conversions.
Num C
Rating
(1)
,
(2)
1. The 8-bit and 10-bit mode operation is structurally tested in production test. Absolute values are tested in 12-bit mode.
2. Better performance is possible using specially designed multi-layer PCBs or averaging techniques.
Symbol Min Typ Max Unit
1 P Resolution 12-Bit LSB — 1.25 — mV
2 P Differential Nonlinearity 12-Bit DNL -4 ±2 4 counts
3 P Integral Nonlinearity 12-Bit INL -5 ±2.5 5 counts
4P
Absolute Error
(3)
3. These values include the quantization error which is inherently 1/2 count for any A/D converter.
12-Bit AE -7 ±4 7 counts
5 C Resolution 10-Bit LSB — 5 — mV
6C
Differential Nonlinearity
10-Bit DNL -1 ±0.5 1 counts
7
C
Integral Nonlinearity
10-Bit INL -2 ±1 2 counts
8C
Absolute Error
3.
10-Bit AE -3 ±2 3 counts
9 C Resolution 8-Bit LSB — 20 — mV
10 C Differential Nonlinearity 8-Bit DNL -0.5 ±0.3 0.5 counts
11 C Integral Nonlinearity 8-Bit INL -1 ±0.5 1 counts
12 C
Absolute Error
3.
8-Bit AE -1.5 ±1 1.5 counts
Conditions are shown in Table A-4. unless otherwise noted. V
REF
= V
RH
- V
RL
= 3.3V. f
ATDCLK
= 8.3MHz
The values are tested to be valid with no PortAD output drivers switching simultaneous with conversions.
Num C
Rating
(1)
,
(2)
1. The 8-bit and 10-bit mode operation is structurally tested in production test. Absolute values are tested in 12-bit mode.
2. Better performance is possible using specially designed multi-layer PCBs or averaging techniques.
Symbol Min Typ Max Unit
1 P Resolution 12-Bit LSB — 0.80 — mV
2 P Differential Nonlinearity 12-Bit DNL -6 ±3 6 counts
3 P Integral Nonlinearity 12-Bit INL -7 ±3 7 counts
4P
Absolute Error
(3)
3. These values include the quantization error which is inherently 1/2 count for any A/D converter.
12-Bit AE -8 ±4 8 counts
5 C Resolution 10-Bit LSB — 3.22 — mV
6 C Differential Nonlinearity 10-Bit DNL -1.5 ±1 1.5 counts
7 C Integral Nonlinearity 10-Bit INL -2 ±1 2 counts
8C
Absolute Error
3.
10-Bit AE -3 ±2 3 counts
9 C Resolution 8-Bit LSB — 12.89 — mV
10 C Differential Nonlinearity 8-Bit DNL -0.5 ±0.3 0.5 counts
11 C Integral Nonlinearity 8-Bit INL -1 ±0.5 1 counts
12 C
Absolute Error
3.
8-Bit AE -1.5 ±1 1.5 counts