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AD5220 Datasheet(PDF) 4 Page - Analog Devices

Part No. AD5220
Description  Increment/Decrement Digital Potentiometer
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD5220 Datasheet(HTML) 4 Page - Analog Devices

 
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AD5220
–4–
REV. 0
–Typical Performance Characteristics
100
75
0
0
32
128
64
96
50
25
RWB
RWA
CODE – Decimal
Figure 4. Wiper to End Terminal
Resistance vs. Code
CODE – Decimal
0.5
–0.5
0
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
TA = +25 C
VDD = +5.5V
50k
VERSION
10k
VERSION
100k
VERSION
Figure 7. R-DNL Relative Resistance
Step Position Nonlinearity Error vs.
Code
CODE – Decimal
0.5
–0.5
0
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
VERSION
10k
VERSION
100k
VERSION
TA = +25 C
VDD = +5.5V
VA = +5.5V
VB = 0V
Figure 10. Potentiometer Divider
DNL Error vs. Code
CONDUCTION CURRENT, IWB – A
6
0
0
20
120
40
60
80
100
5
4
3
2
1
VDD = 5.5V
RAB = 50k
7FH
08H
01H
02H
04H
10H
20H
40H
Figure 5. Resistance Linearity vs.
Conduction Current
CODE – Decimal
0.5
–0.5
0
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
TA = +25 C
VDD = +5.5V
50k
VERSION
10k
VERSION
100k
VERSION
Figure 8. R-INL Resistance Non-
linearity Error vs. Supply Voltage
SUPPLY VOLTAGE – V
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 = 40H
RAB = 50k
VA = VDD
Figure 11. Potentiometer Divider
INL Error vs. Supply Voltage
WIPER RESISTANCE –
48
24
0
20
40
32
16
8
28
36
44
52
60
SS = 300 UNITS
VDD = +2.7V
TA = +25 C
Figure 6. Wiper Contact Resistance
CODE – Decimal
0.5
–0.5
0
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
TA = +25 C
VDD = +5.5V
VA = +5.5V
VB = 0V
50k
VERSION
10k
VERSION
100k
VERSION
Figure 9. Potentiometer Divider INL
Error vs. Code
TEMPERATURE – C
100
80
0
–40
–15
85
10
35
60
60
40
20
100k
VERSION
50k
VERSION
10k
VERSION
Figure 12. Nominal Resistance vs.
Temperature


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