AD5220 查看數據表（PDF） - Analog Devices
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AD5220 Datasheet PDF : 11 Pages
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AD5220–Typical Performance Characteristics
100
75
50
25
RWB
RWA
0
0
32
64
96
128
CODE – Decimal
Figure 4. Wiper to End Terminal
Resistance vs. Code
6
VDD = 5.5V
5 RAB = 50k⍀
4
3
2
7FH
40H
08H
1
20H
10H
04H 02H 01H
0
0
20
40 60
80 100 120
CONDUCTION CURRENT, IWB – A
Figure 5. Resistance Linearity vs.
Conduction Current
48
SS = 300 UNITS
VDD = +2.7V
40
TA = +25؇C
32
24
16
8
0
20
28
36
44
52
60
WIPER RESISTANCE – ⍀
Figure 6. Wiper Contact Resistance
0.5
0.4
TA = +25؇C
VDD = +5.5V
0.3
0.2
50k⍀ VERSION
0.1
100k⍀ VERSION
0.0
–0.1
–0.2
–0.3
10k⍀ VERSION
–0.4
–0.5
0 16 32 48 64 80 96 112 128
CODE – Decimal
Figure 7. R-DNL Relative Resistance
Step Position Nonlinearity Error vs.
Code
0.5
0.4
0.3
0.2
0.1
0.0
–0.1
–0.2
–0.3
–0.4
–0.5
0
100k⍀ VERSION
TA = +25؇C
VDD = +5.5V
50k⍀ VERSION
10k⍀ VERSION
16 32 48 64 80 96 112 128
CODE – Decimal
Figure 8. R-INL Resistance Non-
linearity Error vs. Supply Voltage
0.5
0.4
0.3
10k⍀ VERSION
0.2
50k⍀ VERSION
0.1
0.0
–0.1
–0.2
–0.3
–0.4
TA = +25؇C
VDD = +5.5V
VA = +5.5V
VB = 0V
100k⍀ VERSION
–0.5
0 16 32 48 64 80 96 112 128
CODE – Decimal
Figure 9. Potentiometer Divider INL
Error vs. Code
0.5
TA = +25؇C
0.4
VDD = +5.5V
0.3
VA = +5.5V
VB = 0V
0.2
100k⍀ VERSION
0.1
50k⍀ VERSION
0.0
–0.1
–0.2
–0.3
–0.4
10k⍀ VERSION
–0.5
0 16 32 48 64 80 96 112 128
CODE – Decimal
Figure 10. Potentiometer Divider
DNL Error vs. Code
0.600
0.525
0.450
CODE = 40H
RAB = 50k⍀
VA = VDD
0.375
0.300
0.255
0.150
0.075
0.000
2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00
SUPPLY VOLTAGE – V
Figure 11. Potentiometer Divider
INL Error vs. Supply Voltage
100
100k⍀ VERSION
80
60
40
50k⍀ VERSION
20
10k⍀ VERSION
0
–40 –15
10
35
60
85
TEMPERATURE – ؇C
Figure 12. Nominal Resistance vs.
Temperature
–4–
REV. A
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