Datasheet

Data Sheet AD5253/AD5254
Rev. C | Page 11 of 32
R
WB
()
V
BIAS
(V)
03824-0-021
20
0
40
60
80
100
120
140
160
200
240
180
220
10 23456
V
DD
= 2.7V
T
A
= 25C
V
DD
= 5.5V
T
A
= 25C
DATA = 0x00
Figure 9. Wiper Resistance vs. V
BIAS
TEMPERATURE (C)
03824-0-022
–6
–4
–2
0
2
4
6
–40 –20 0 20 40 60 80 100 120
R
WB
(%)
Figure 10. Change of R
WB
vs. Temperature
CODE (Decimal)
03824-0-023
0 32 64 96 128 160
10kΩ
100kΩ
50kΩ
192 224 256
RHEOSTAT MODE TEMPCO (ppm/°C)
V
DD
= 5V
T
A
= –40°C TO +85°C
V
A
= V
DD
V
B
= 0V
500
550
600
650
700
750
800
850
900
950
1000
Figure 11. Rheostat Mode Tempco (∆R
WB
/R
WB
)/∆T × 10
6
vs. Code
CODE (Decimal)
03824-0-024
0
20
25
10
5
15
30
35
40
45
50
0 32 64 96 128 160 192 224 256
POTENTIOMETER MODE TEMPCO (ppm/°C)
100kΩ
50kΩ
10kΩ
V
DD
= 5V
T
A
= –40°C TO +85°C
V
A
= V
DD
V
B
= 0V
Figure 12. Potentiometer Mode Tempco (∆V
WB
/V
WB
)/∆T × 10
6
vs. Code
–60
–48
–24
–12
0
–36
–54
–30
–18
–6
–42
GAIN (dB)
1k 10k10 100 100k 1M 10M
FREQUENCY (Hz)
03824-0-025
0xFF
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
0x00
Figure 13. Gain vs. Frequency vs. Code, R
AB
= 1 kΩ, T
A
= 25°C
–60
–48
–24
–12
0
–36
–54
–30
–18
–6
–42
GAIN (dB)
1k 10k10 100 100k 1M 10M
FREQUENCY (Hz)
03824-0-026
0xFF
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
0x00
Figure 14. Gain vs. Frequency vs. Code, R
AB
= 10 kΩ, T
A
= 25°C