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參數(shù)資料
| 型號： | AD420 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Serial Input 16-Bit 4 mA-20 mA, 0 mA-20 mA DAC |
| 中文描述： | 串行輸入16位四毫安- 20毫安，○毫安- 20毫安援 |
| 文件頁數(shù)： | 2/11頁 |
| 文件大小： | 144K |
| 代理商： | AD420 |
REV. F
–2–
AD420–SPECIFICATIONS
(T
A
= T
MIN
–T
MAX
, V
CC
= +24 V, unless otherwise noted)
Min
AX-32 Version
1
Typ
Parameter
Max
Units
Comments
RESOLUTION
16
Bits
I
OUT
CHARACTERISTICS
Operating Current Ranges
R
L
= 500
4
0
0
0
20
20
24
V
CC
– 2.5 V
3
mA
mA
mA
V
ms
M
Current Loop Voltage Compliance
Settling Time (to 0.1% of FS)
2
Output Impedance (Current Mode)
Accuracy
3
Monotonicity
Integral Nonlinearity
Offset (0 mA or 4 mA) (T
A
= +25
°
C)
Offset Drift
Total Output Error (20 mA or 24 mA) (T
A
= +25
°
C)
Total Output Error Drift
PSRR
4
2.5
25
16
Bits
%
%
ppm/
°
C
%
ppm/
°
C
μ
A/V
±
0.002
±
0.012
±
0.05
50
±
0.15
50
10
20
20
5
V
OUT
CHARACTERISTICS
FS Output Voltage Range (Pin 17)
0
5
V
VOLTAGE REFERENCE
REF OUT
Output Voltage (T
A
= +25
°
C)
Drift
Externally Available Current
Short Circuit Current
REF IN
Resistance
V
LL
Output Voltage
Externally Available Current
Short Circuit Current
4.995
5.0
5.005
±
25
V
ppm/
°
C
mA
mA
5
7
30
k
4.5
5
20
V
mA
mA
DIGITAL INPUTS
V
IH
(Logic 1)
V
IL
(Logic 0)
I
IH
(V
IN
= 5.0 V)
I
IL
(V
IN
= 0 V)
Data Input Rate (“3-Wire” Mode)
Data Input Rate (“Asynchronous” Mode)
2.4
V
V
μ
A
μ
A
MBPS
kBPS
0.8
±
10
±
10
3.3
150
No Minimum
No Minimum
DIGITAL OUTPUTS
FAULT DEFECT
V
OH
(10 k
Pull-Up Resistor to V
LL
)
V
OL
(10 k
Pull-Up Resistor to V
LL
)
V
OL
@ 2.5 mA
DATA OUT
V
OH
(I
OH
= –0.8 mA)
V
OL
(I
OL
= 1.6 mA)
3.6
4.5
0.2
0.6
V
V
V
0.4
3.6
4.3
0.3
V
V
0.4
POWER SUPPLY
Operating Range V
CC
Quiescent Current
Quiescent Current (External V
LL
)
TEMPERATURE RANGE
Specified Performance
12
32
5.5
V
mA
mA
4.2
3
–40
+85
°
C
NOTES
1
X refers to package designator, R or N.
2
External capacitor selection must be as described in Figure 5.
3
Total Output Error includes Offset and Gain Error. Total Output Error and Offset Error are with respect to the Full-Scale Output and are measured with an ideal
+5 V reference. If the internal reference is used, the reference errors must be added to the Offset and Total Output Errors.
4
PSRR is measured by varying V
CC
from 12 V to its maximum 32 V.
Specifications subject to change without notice.
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