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| 型號(hào)： | ADCRM |
| 英文描述： | Analog-to-Digital Reference Manual |
| 中文描述： | 模擬到數(shù)字參考手冊(cè) |
| 文件頁數(shù)： | 38/46頁 |
| 文件大?。?/td> | 415K |
| 代理商： | ADCRM |
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MOTOROLA
A-2
ELECTRICAL CHARACTERISTICS
ADC
REFERENCE MANUAL
NOTES:
1. Refers to operation over full temperature and frequency range.
2. To obtain full-scale, full-range results, V
SSA
≤
V
RL
≤
V
INDC
≤
V
RH
≤
V
DDA.
3. Current measured at maximum system clock frequency with all modules active.
4. Maximum leakage occurs at maximum operating temperature. As a general rule, current decreases by half for
each 10
°
C below maximum temperature
NOTES:
1. Assumes 2.1 MHz ADC clock and selection of minimum sample time (2 ADC clocks)
Table A-2 ADC DC Electrical Characteristics (Operating)
(VSS = 0 Vdc, ADCLK = 2.1 MHz, TA within operating temperature range)
Num
1
2
3
4
5
6
7
8
9
10
11
Parameter
Symbol
V
DDA
V
DDI
V
SSI –
V
SSA
V
DDI –
V
DDA
V
RL
V
RH
V
RH –
V
RL
V
INDC
V
IH
V
IL
V
OH
Min
4.5
4.5
– 1.0
– 1.0
V
SSA
V
DDA
/ 2
4.5
V
SSA
0.7 (V
DDA
)
V
SSA
– 0.3
V
DDA
– 0.2
Max
5.5
5.5
1.0
1.0
V
DDA
/ 2
V
DDA
5.5
V
DDA
V
DDA
+ 0.3
0.2 (V
DDA
)
—
Unit
V
V
mV
V
V
V
V
V
V
V
V
Analog Supply
1
Internal Digital Supply
1
V
SS
Differential Voltage
V
DD
Differential Voltage
Reference Voltage Low
2
Reference Voltage High
2
V
REF
Differential Voltage
Input Voltage
2
Input High, Digital Port
Input Low, Digital Port
CMOS Output High, Digital Port
I
OH
= – 10.0
μ
A
Output Low, Digital Port
I
OL
= 10.0
μ
A
Output High, Digital Port
I
OH
= – 0.8 mA
Output Low, Digital Port
I
OL
= 1.6 mA
Analog Supply Current
3
Reference Supply Current
Input Current, Off Channel
4
Total Input Capacitance, Not Sampling
Total Input Capacitance, Sampling
12
V
OL
—
0.2
V
13
V
OH
V
DDA
– 0.8
—
V
14
V
OL
—
0.4
V
15
17
18
19
20
I
DDA
I
REF
I
OFF
C
INN
C
INS
—
—
—
—
—
1.0
250
100
10
15
mA
μ
A
nA
pF
pF
Table A-3 ADC AC Characteristics (Operating)
(VDD and VDDA = 5.0 Vdc
±
10%, VSS = 0 Vdc, TA within operating temperature range)
Num
1
2
3
4
5
Parameter
Symbol
F
ICLK
F
ADCLK
T
CONV
T
CONV
T
SR
Min
2.0
0.5
7.62
8.58
—
Max
16.78
2.1
—
—
10
Unit
MHz
MHz
μ
s
μ
s
μ
s
IMB Clock Frequency
ADC Clock Frequency
8-bit Conversion Time (16 ADC Clocks)
1
10-bit Conversion Time (18 ADC Clocks)
1
Stop Recovery Time
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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