參數(shù)資料
型號: AD5220
廠商: Analog Devices, Inc.
元件分類: 數(shù)字電位計
英文描述: Increment/Decrement Digital Potentiometer(增量/減量數(shù)字電位器)
中文描述: 遞增/遞減數(shù)字電位器(增量/減量數(shù)字電位器)
文件頁數(shù): 4/10頁
文件大?。?/td> 284K
代理商: AD5220
AD5220
–4–
REV. 0
–Typical Performance Characteristics
P
E
A
100
75
00
32
128
64
96
50
25
R
WB
R
WA
CODE – Decimal
Figure 4. Wiper to End Terminal
Resistance vs. Code
CODE – Decimal
R
0.5
–0.50
16
128
32
48
64
80
96
112
0.4
0.1
0.0
–0.2
–0.4
0.3
0.2
–0.1
–0.3
T
A
= +25
8
C
V
DD
= +5.5V
50k
V
VERSION
10k
V
VERSION
100k
V
VERSION
Figure 7. R-DNL Relative Resistance
Step Position Nonlinearity Error vs.
Code
CODE – Decimal
D
0.5
–0.50
16
128
32
48
64
80
96
112
0.4
0.1
0.0
–0.2
–0.4
0.3
0.2
–0.1
–0.3
50k
V
VERSION
10k
V
VERSION
100k
V
VERSION
T
A
= +25
8
C
V
DD
= +5.5V
V
A
= +5.5V
V
B
= 0V
Figure 10. Potentiometer Divider
DNL Error vs. Code
CONDUCTION CURRENT, I
WB
m
A
V
W
6
00
20
120
40
60
80
100
5
4
3
2
1
V
DD
= 5.5V
R
AB
= 50k
V
7F
H
08
H
01
H
02
H
04
H
10
H
20
H
40
H
Figure 5. Resistance Linearity vs.
Conduction Current
CODE – Decimal
R
0.5
–0.50
16
128
32
48
64
80
96
112
0.4
0.1
0.0
–0.2
–0.4
0.3
0.2
–0.1
–0.3
T
A
= +25
8
C
V
DD
= +5.5V
50k
V
VERSION
10k
V
VERSION
100k
V
VERSION
Figure 8. R-INL Resistance Non-
linearity Error vs. Supply Voltage
SUPPLY VOLTAGE – V
P
N
0.600
0.000
2.00 2.50
6.00
3.00 3.50 4.00 4.50 5.00 5.50
0.525
0.300
0.255
0.150
0.075
0.450
0.375
CODE = 40
H
R
AB
= 50k
V
V
A
= V
DD
Figure 11. Potentiometer Divider
INL Error vs. Supply Voltage
WIPER RESISTANCE –
V
F
48
24
0
20
40
32
16
8
28
36
44
52
60
SS = 300 UNITS
V
DD
= +2.7V
T
A
= +25
8
C
Figure 6. Wiper Contact Resistance
CODE – Decimal
I
0.5
–0.50
16
128
32
48
64
80
96
112
0.4
0.1
0.0
–0.2
–0.4
0.3
0.2
–0.1
–0.3
T
A
= +25
8
C
V
DD
= +5.5V
V
A
= +5.5V
V
B
= 0V
50k
V
VERSION
10k
V
VERSION
100k
V
VERSION
Figure 9. Potentiometer Divider INL
Error vs. Code
TEMPERATURE –
8
C
N
V
100
80
0
–40
–15
85
10
35
60
60
40
20
100k
V
VERSION
50k
V
VERSION
10k
V
VERSION
Figure 12. Nominal Resistance vs.
Temperature
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