ad5259 Analog Devices, Inc., ad5259 Datasheet - Page 11

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

–12
–18
–24
–30
–36
–42
–48
–54
–60
–12
–18
–24
–30
–36
–42
–48
–54
–60
–12
–18
–24
–30
–36
–42
–48
–54
–60
–6
–6
–6
0
0
0
1k
1k
1k
Figure 25. Gain vs. Frequency vs. Code, R
Figure 24. Gain vs. Frequency vs. Code, R
Figure 26. −3 dB Bandwidth @ Code = 0×80
10k
10k
10k
100kΩ
80kHz
80
40
20
10
08
04
02
01
80
40
20
10
08
04
02
01
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
50kΩ
160kHz
100k
10kΩ
800kHz
100k
100k
5kΩ
2MHz
AB
AB
1M
= 100 kΩ
= 50 kΩ
10M
1M
1M
Rev. A | Page 11 of 24
10k
100
1
2
1k
10
80
60
40
20
0
100
0
CODE = MIDSCALE, V
PSRR @ V
Figure 27. Logic Supply Current vs. Input Voltage
Figure 29. Digital Feedthrough
1
LOGIC
Figure 28. PSRR vs. Frequency
SCL
V
W
1k
PSRR @ V
= 3V DC ± 10% p-p AC
V
A
FREQUENCY (Hz)
DD
= V
2
400ns/DIV
= V
LOGIC
LOGIC
V
IH
10k
LOGIC
(V)
, V
= 5V DC ± 10% p-p AC
V
= 3V
B
DD
3
= 0V
= V
LOGIC
100k
= 5V
4
AD5259
1M
5