ad5258 Analog Devices, Inc., ad5258 Datasheet - Page 10

• Manufacturer Part Number: ad5258
• Description: Nonvolatile, I2c-compatible 64-position, Digital Potentiometer
• Manufacturer: Analog Devices, Inc.

AD5258
Figure 18. Potentiometer Mode Tempco (ΔV
Figure 17. Rheostat Mode Tempco (ΔR
–100
–150
250
200
150
100
–50
120
100
–20
350
300
250
200
150
100
50
80
60
40
20
50
0
0
0
–40
0
0
50k
100k
10k
8
8
–20
100k
50k
1k
1k
Figure 19. R
16
16
10k
0
TEMPERATURE (°C)
24
24
R
CODE (Decimal)
CODE (Decimal)
R
WB
WB
WB
vs. Temperature
@ V
@ V
20
32
32
DD
DD
AB
= 5.5V
= 2.7V
×10
W
40
40
40
× 10
6
)/(R
6
)/(V
48
48
AB
× ∆T) vs. Code
60
W
× ΔT) vs. Code
56
56
80
64
64
Rev. A | Page 10 of 24
120
100
–12
–18
–24
–30
–36
–42
–48
–54
–60
–12
–18
–24
–30
–36
–42
–48
–54
–60
–6
–6
80
60
40
20
0
0
0
–40
10k
1k
Figure 22. Gain vs. Frequency vs. Code, R
Figure 21. Gain vs. Frequency vs. Code, R
Figure 20. Total Resistance vs. Temperature
–20
100k
10k
0x20
0x10
0x08
0x04
0x02
0x01
0x20
0x10
0x08
0x04
0x02
0x01
0
TEMPERATURE (°C)
FREQUENCY (Hz)
FREQUENCY (Hz)
10k R
20
T
100k
1M
@ V
100k R
50k R
1k R
DD
T
= 5.5V
T
T
40
@ V
@ V
@ V
DD
DD
DD
AB
10M
AB
= 5.5V
1M
= 10 kΩ
= 5.5V
= 5.5V
= 1 kΩ
60
80
100M
10M