Datasheet

Data Sheet AD5231
Rev. D | Page 11 of 28
FREQUENC
Y (Hz)
0
–50
1k
GAIN (dB)
100k
10k
–30
–40
–20
–10
1M
0x04
0x01
–60
0x02
CODE = 0x200
0x100
0x80
0x40
0x20
0x10
0x08
02739-018
Figure 18. Gain vs. Frequency vs. Code, R
AB
= 50 kΩ (Figure 32)
FREQUENCY (Hz)
0
–50
1k
GAIN (dB)
100k
10k
–30
–40
–20
–10
1M
0x04
0x01
–60
0x02
CODE = 0x200
0x100
0x80
0x40
0x20
0x10
0x08
02739-019
Figure 19. Gain vs. Frequency vs. Code, R
AB
= 100 kΩ (Figure 32)
FREQUENCY (Hz)
PSRR (–dB)
80
100 10k 1M1k 100k 10M
70
50
30
20
0
60
40
10
V
DD
= 5.0V ±100mV AC
V
SS
= 0V, V
A
= 5V, V
B
= 0V
MEASURED AT V
W
WITH CODE = 0x200
R
AB
= 100kΩ
R
AB
= 50kΩ
R
AB
= 10kΩ
02739-020
Figure 20. PSRR vs. Frequency
100µs/DIV
V
DD
= 5V
V
A
= 2.25V
V
B
= 0V
V
A
V
W
0.5V/DIV
EXPECTED
VALUE
MIDSCALE
100
90
10
0%
02739-021
Figure 21. Power-On Reset, V
A
= 2.25 V, V
B
= 0 V, Code = 1010101010
B
TIME (µs)
V
OUT
(V)
2.55
0 10 205 15 25
2.53
2.51
2.49
2.47
2.45
V
DD
/V
SS
= 5V/0V
CODE = 0x200 TO 0x1FF
R
AB
= 10kΩ
R
AB
= 50kΩ
R
AB
= 100kΩ
02739-022
Figure 22. Midscale Glitch Energy, Code 0x200 to 0x1FF
4ms/DIV
5V/DIV
5V/DIV
5V/DIV
CS
CLK
SDI
I
DD
20mA/DIV
02739-023
Figure 23. I
DD
vs. Time when Storing Data to EEMEM