Datasheet

Data Sheet AD5425
Rev. C | Page 11 of 24
Figure 22. THD and Noise vs. Frequency
Figure 23. Power Supply Rejection vs. Frequency
Figure 24. Wideband SFDR, Clock = 2 MHz, f
OUT
= 50 kHz
Figure 25. Wideband SFDR, Clock = 2 MHz, f
OUT
= 20 kHz
Figure 26. Narrowband SFDR, Clock = 2 MHz, f
OUT
= 20 kHz
Figure 27. Narrowband SFDR, Clock = 2 MHz, f
OUT
= 50 kHz
03161-022
FREQUENCY (Hz)
1M1 10 100 1k 10k 100k
THD + N (dB)
–60
–75
–70
–65
–80
–85
–90
T
A
= 25°C
V
DD
= 3V
V
REF
= 3.5V p-p
03161-023
FREQUENCY (Hz)
10M1 10 100 1k 10k 100k 1M
POWER SUPPLY REJECTION
20
–20
0
–60
–40
–100
–80
–120
V
DD
= 3V
AMPLIFIER = AD8038
FULL SCALE
ZERO SCALE
03161-024
FREQUENCY (Hz)
1M0 200k 400k 600k 800k
SFDR (dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
T
A
= 25°C
V
DD
= 5V
V
REF
= 3.5V
AD8038 AMPLIFIER
03161-025
FREQUENCY (Hz)
1M0 200k 400k 600k 800k
SFDR (dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
T
A
= 25°C
V
DD
= 5V
V
REF
= 3.5V
AD8038 AMPLIFIER
03161-026
FREQUENCY (Hz)
30k10k 14k12k 18k 22k 26k16k 20k 24k 28k
SFDR (dB)
0
–40
–30
–20
–10
–60
–50
–100
–90
–80
–70
–110
T
A
= 25°C
V
DD
= 5V
V
REF
= 3.5V
AD8038 AMPLIFIER
03161-027
FREQUENCY (Hz)
75k25k 35k30k 45k 55k 65k40k 50k 60k 70k
SFDR (dB)
0
–30
–20
–10
–60
–50
–40
–100
–90
–80
–70
–110
T
A
= 25°C
V
DD
= 5V
V
REF
= 3.5V
AD8038 AMPLIFIER