参数资料
型号: AD5254EVAL
厂商: Analog Devices, Inc.
元件分类: 通用总线功能
英文描述: Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers
中文描述: 双路、256抽头、非易失、I2C接口、数字电位器
文件页数: 11/28页
文件大小: 834K
代理商: AD5254EVAL
AD5253/AD5254
Rev. 0 | Page 11 of 28
R
W
)
V
BIAS
(V)
0
20
0
40
60
80
100
120
140
160
200
240
180
220
1
0
2
3
4
5
6
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)
0
–6
–4
–2
0
2
4
6
–40
–20
0
20
40
60
80
100
120
R
W
(
Figure 10. Change of R
AB
vs. Temperature
CODE (Decimal)
0
0
50
60
70
20
10
30
40
80
90
0
32
64
96
128
160
192
224
256
R
°
C
V
DD
= 5V
T
A
= –40°C/+85
°
C
V
A
= V
DD
V
B
= 0V
Figure 11. Rheostat Mode Tempco (R
WB
/R
WB
)/T × 10
6
vs. Code
CODE (Decimal)
0
0
20
25
10
5
15
30
0
32
64
96
128
160
192
224
256
P
°
C
V
DD
= 5V
T
A
= –40°C/+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
G
1k
10k
10
100
100k
1M
10M
FREQUENCY (Hz)
0
0xFF
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
0x00
Figure 13. Gain vs. Frequency vs. Code, R
AB
= 1 k, T
A
= 25°C
–60
–48
–24
–12
0
–36
–54
–30
–18
–6
–42
G
1k
10k
10
100
100k
1M
10M
FREQUENCY (Hz)
0
0xFF
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
0x00
Figure 14. Gain vs. Frequency vs. Code, R
AB
= 10 k, T
A
= 25°C
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