ad5259 Analog Devices, Inc., ad5259 Datasheet - Page 10

• Manufacturer Part Number: ad5259
• Description: Nonvolatile, I2c-compatible 256-position, Digital Potentiometer
• Manufacturer: Analog Devices, Inc.

AD5259
Figure 19. Potentiometer Mode Tempco (ΔV
Figure 18. Rheostat Mode Tempco (ΔR
–100
–200
–300
–400
–500
–600
400
300
200
100
–10
–20
–30
–40
350
300
250
200
150
100
70
60
50
40
30
20
10
50
0
0
0
–40
0
0
R
WB
5kΩ
100kΩ
50kΩ
@ V
32
32
–20
10kΩ
10kΩ
50kΩ
DD
Figure 20. R
= 5.5V
64
64
100kΩ
0
5kΩ
TEMPERATURE (°C)
96
96
CODE (Decimal)
CODE (Decimal)
WB
vs. Temperature
20
128
128
R
AB
WB
x 10
160
160
W
@ V
40
x 10
6
)/(R
DD
6
)/(V
192
192
AB
= 2.7V
x ΔT) vs. Code
60
W
x ΔT) vs. Code
224
224
80
256
256
Rev. A | Page 10 of 24
–12
–18
–24
–30
–36
–42
–48
–54
–60
–12
–18
–24
–30
–36
–42
–48
–54
–60
120
100
–6
–6
80
60
40
20
0
0
0
–40
1k
1k
Figure 23. Gain vs. Frequency vs. Code, R
Figure 22. Gain vs. Frequency vs. Code, R
Figure 21. Total Resistance vs. Temperature
–20
10k
10k
80
40
20
10
08
04
02
01
80
40
20
10
08
04
02
01
100kΩ Rt @ V
50kΩ Rt @ V
5kΩ Rt @ V
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
0
TEMPERATURE (°C)
FREQUENCY (Hz)
FREQUENCY (Hz)
10kΩ Rt @ V
DD
100k
100k
20
DD
DD
= 5.5V
= 5.5V
= 5.5V
DD
= 5.5V
40
AB
1M
AB
1M
= 10 kΩ
= 5 kΩ
60
80
10M
10M