AD5251 Analog Devices, AD5251 Datasheet - Page 17

• Manufacturer Part Number: AD5251
• Description: (AD5251 / AD5252) Dual 64-and 256-Position I2C Nonvolatile Memory Digital Potentiometers
• Manufacturer: Analog Devices

240
220
200
180
160
140
120
100
80
60
40
20
–2
–4
–6
90
80
70
60
50
40
30
20
10
0
6
4
2
0
0
–40
Figure 23. AD5252 Rheostat Mode Tempco ∆R
0
0
–20
32
1
Figure 22. Change of R
Figure 21. Wiper Resistance vs. V
64
0
2
TEMPERATURE (°C)
20
96
CODE (Decimal)
V
T
DD
A
V
= 25°C
= 2.7V
BIAS
128
40
3
(V)
AB
vs. Temperature
V
160
T
V
T
V
V
60
DD
A
DD
A
A
B
= 25°C
= –40°C/+85°C
= V
= 0V
4
= 5.5V
= 5V
DD
192
80
DATA = 0x00
BIAS
WB
/∆T vs. Code
5
100
224
120
256
6
Rev. 0 | Page 17 of 28
30
25
20
15
10
Figure 24. AD5252 Potentiometer Mode Tempco ∆V
5
0
–12
–18
–24
–30
–36
–42
–48
–54
–60
–12
–18
–24
–30
–36
–42
–48
–54
–60
–6
0
–6
Figure 26. AD5252 Gain vs. Frequency vs. Code, R
0
Figure 25. AD5252 Gain vs. Frequency vs. Code, R
0
10
10
32
100
100
64
0x08
0x02
1k
1k
96
CODE (Decimal)
0x04
FREQUENCY (Hz)
0xFF
0x80
0x40
0x20
0x10
0x08
FREQUENCY (Hz)
0x04
0x01
0x00
128
10k
10k
0x02
160
V
T
V
V
DD
A
A
B
0x01
100k
= –40°C/+85°C
= V
= 0V
AD5251/AD5252
100k
= 5V
0x40
0x20
0x10
DD
192
0x00
1M
WB
224
1M
AB
AB
/∆T vs. Code
= 10 kΩ
0x80
= 1 kΩ
0xFF
10M
256
10M