ad5231 Analog Devices, Inc., ad5231 Datasheet - Page 11

• Manufacturer Part Number: ad5231
• Description: Nonvolatile Memory, 1024-position Digital Potentiometer
• Manufacturer: Analog Devices, Inc.

Figure 19. Gain vs. Frequency vs. Code, R
–10
–20
–30
–40
–50
–60
–10
–20
–30
–40
–50
–60
80
70
60
50
40
30
20
10 V
Figure 18. Gain vs. Frequency vs. Code, R
0
100
0
0
1k
1k
V
MEASURED AT V
0x100
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
CODE = 0x200
DD
SS
CODE = 0x200
= 0V, V
= 5.0V ±100mV AC
0x02
0x01
0x100
0x80
0x40
0x20
0x10
0x08
0x04
1k
A
= 5V, V
Figure 20. PSRR vs. Frequency
R
R
R
AB
AB
AB
W
10k
10k
WITH CODE = 0x200
B
= 100kΩ
= 50kΩ
= 10kΩ
= 0V
FREQUENCY (Hz)
10k
FREQUENCY (Hz)
FREQUENCY (Hz)
100k
AB
100k
100k
AB
= 100 kΩ (Figure 32)
= 50 kΩ (Figure 32)
1M
10M
1M
1M
Rev. C | Page 11 of 28
20mA/DIV
100
Figure 21. Power-On Reset, V
0%
CLK
90
10
SDI
I
CS
DD
2.55
2.53
2.51
2.49
2.47
2.45
V
V
V
DD
A
B
Figure 22. Midscale Glitch Energy, Code 0x200 to 0x1FF
0
= 2.25V
= 0V
Figure 23. I
V
CODE = 0x200 TO 0x1FF
= 5V
DD
/V
SS
= 5V/0V
5
DD
vs. Time when Storing Data to EEMEM
100µs/DIV
A
10
= 2.25 V, V
4ms/DIV
TIME (µs)
MIDSCALE
B
R
R
R
15
= 0 V, Code = 1010101010
AB
AB
AB
EXPECTED
= 10kΩ
= 50kΩ
= 100kΩ
VALUE
20
AD5231
V
V
0.5V/DIV
A
W
25
5V/DIV
5V/DIV
5V/DIV
B