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參數(shù)資料
| 型號： | ADC1225 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 串行ADC |
| 英文描述： | 12-Bit Plus Sign mP Compatible A/D Converters |
| 中文描述： | 12位帶符號手機兼容的A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 3/18頁 |
| 文件大?。?/td> | 327K |
| 代理商： | ADC1225 |
Electrical Characteristics
(Continued)
The following specifications apply for DV
CC
e
AV
CC
e
5V, V
REF
e
5V, f
CLK
e
1.0 MHz, V
b
e b
5V for bipolar input range, or
V
b
e
GND for unipolar input range unless otherwise specified. Bipolar input range is defined as
b
5.05V
s
V
IN(
a
)
s
5.05V;
b
5.05V
s
V
IN(
b
)
s
5.05V and
l
V
IN(
a
)
b
V
IN(
b
)
l
s
5.05V. Unipolar input range is defined as
b
0.05V
s
V
IN(
a
)
s
5.05V;
b
0.05V
s
V
IN(
b
)
s
5.05V and
l
V
IN(
a
)
b
V
IN(
b
)
l
s
5.05V.
Boldface limits apply from T
MIN
to T
MAX
;
all other limits T
A
e
T
J
e
25
§
C (Notes 3, 4, 5, 6, 7).
Parameter
Conditions
ADC1205CCJ, ADC1225CCD
ADC1205CCJ-1, ADC1225CCD-1
Units
Limit
Typ
Tested
Limit
(Note 9)
Design
Limit
(Note 10)
Typ
Tested
Limit
(Note 9)
Design
Limit
(Note 10)
(Note 8)
(Note 8)
CONVERTER CHARACTERISTICS
(Continued)
Minimum Analog Input
Voltage
Unipolar Input
Range
Bipolar Input
Range
GND-0.05
GND-0.05
GND-0.05
V
b
V
CC
b
0.05
b
V
C
b
0.05
b
V
CC
b
0.05
V
Maximum Analog Input
Voltage
Unipolar Input
Range
Bipolar Input
Range
V
CC
a
0.05
V
CC
a
0.05
V
CC
a
0.05
V
V
CC
a
0.05
V
CC
a
0.05
V
CC
a
0.05
V
DC Common-Mode Error
g
(/8
g
(/2
g
(/8
g
(/2
g
(/2
LSB
Power Supply Sensitivity
AV
CC
e
DV
CC
e
5V
g
5%,
V
b
eb
5V
g
5%
Zero Error
Positive and Negative
Full-Scale Error
Linearity Error
g
*/4
g
*/4
g
*/4
g
*/4
g
*/4
g
*/4
LSB
LSB
g
(/4
g
(/4
g
(/4
LSB
DIGITAL AND DC CHARACTERISTICS
V
IN(1)
, Logical ‘‘1’’ Input
Voltage (Min)
V
CC
e
5.25V,
All Inputs except
CLK IN
2.0
2.0
2.0
V
V
IN(0)
, Logical ‘‘0’’ Input
Voltage (Max)
V
CC
e
4.75V,
All Inputs except
CLK IN
0.8
0.8
0.8
V
I
IN(1)
, Logical ‘‘1’’ Input
Current (Max)
V
IN
e
5V
0.005
1
0.005
1
m
A
I
IN(0)
, Logical ‘‘0’’ Input
Current (Max)
V
IN
e
0V
b
0.005
b
1
b
0.005
b
1
m
A
V
T
a
(Min), Minimum Positive-
Going Threshold Voltage
CLK IN
3.1
2.7
3.1
2.7
2.7
V
V
T
a
(Max), Maximum Positive-
Going Threshold Voltage
CLK IN
3.1
3.5
3.1
3.5
3.5
V
V
T
b
(Min), Minimum Negative-
Going Threshold Voltage
CLK IN
1.8
1.4
1.8
1.4
1.4
V
V
T
b
(Max), Maximum Negative- CLK IN
Going Threshold Voltage
1.8
2.1
1.8
2.1
2.1
V
V
H
(Min), Minimum Hysteresis
[
V
T
a
(Min)
b
V
T
b
(Max)
]
CLK IN
1.3
0.6
1.3
0.6
0.6
V
V
H
(Max), Maximum Hysteresis
[
V
T
a
(Max)
b
V
T
b
(Min)
]
CLK IN
1.3
2.1
1.3
2.1
2.1
V
3
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