Datasheet

AD5220
–4–
REV.
–Typical Performance Characteristics
PERCENT OF NOMINAL
END-TO-END RESISTANCE – % R
AB
100
75
0
0
32 128
64 96
50
25
R
WB
R
WA
CODE – Decimal
Figure 4. Wiper to End Terminal
Resistance vs. Code
CODE – Decimal
RDNL – LSB
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
T
A
= +258C
V
DD
= +5.5V
50kV VERSION
10kV VERSION
100kV VERSION
Figure 7. R-DNL Relative Resistance
Step Position Nonlinearity Error vs.
Code
CODE – Decimal
DNL – LSB
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
50kV VERSION
10kV VERSION
100kV VERSION
T
A
= +258C
V
DD
= +5.5V
V
A
= +5.5V
V
B
= 0V
Figure 10. Potentiometer Divider
DNL Error vs. Code
CONDUCTION CURRENT, I
WB
– mA
V
WB
– V
6
0
0
20 120
40 60 80 100
5
4
3
2
1
V
DD
= 5.5V
R
AB
= 50kV
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
RINL – LSB
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
T
A
= +258C
V
DD
= +5.5V
50kV VERSION
10kV VERSION
100kV VERSION
Figure 8. R-INL Resistance Non-
linearity Error vs. Supply Voltage
SUPPLY VOLTAGE – V
POTENTIOMETER DIVIDER
NONLINEARITY – LSB
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
= 50kV
V
A
= V
DD
Figure 11. Potentiometer Divider
INL Error vs. Supply Voltage
WIPER RESISTANCE – V
FREQUENCY
48
24
0
20
40
32
16
8
28 36 44 52 60
SS = 300 UNITS
V
DD
= +2.7V
T
A
= +258C
Figure 6. Wiper Contact Resistance
CODE – Decimal
INL – LSB
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
T
A
= +258C
V
DD
= +5.5V
V
A
= +5.5V
V
B
= 0V
50kV VERSION
10kV VERSION
100kV VERSION
Figure 9. Potentiometer Divider INL
Error vs. Code
TEMPERATURE – 8C
NOMINAL END-TO-END RESISTANCE – kV
100
80
0
–40 –15 85
10 35 60
60
40
20
100kV VERSION
50kV VERSION
10kV VERSION
Figure 12. Nominal Resistance vs.
Temperature
A