Datasheet

AD5429/AD5439/AD5449 Data Sheet
Rev. E | Page 12 of 28
–120
–100
–80
–60
0
20
1 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
–40
–20
T
A
= 25°
C
V
DD
= 3V
AMP = AD8038
FULL SCALE
ZERO SCALE
PSRR (dB)
04464-047
10
Figure 25. Power Supply Rejection Ratio vs. Frequency
–90
–85
–80
–75
–70
–65
–60
THD + N (dB)
100 1k1
10 10k 100k 1M
FREQUENCY (Hz)
04464-048
T
A
= 25°C
V
DD
= 3V
V
REF
= 3.5V p-p
Figure 26. THD + Noise vs. Frequency
0
20
40
60
80
100
SFDR (dB)
0 20 40 60
80 100 120 140 160
180 200
f
OUT
(kHz)
04464-049
T
A
= 25°C
V
REF
= 3.5V
AMP = AD8038
MCLK = 1MHz
MCLK = 200kHz
MCLK = 0.5MHz
Figure 27. Wideband SFDR vs. f
OUT
Frequency
0
10
20
30
40
50
60
70
80
90
SFDR (dB)
0 100 200 300 400 500 600 700 800 900 1000
f
OUT
(kHz)
04464-050
MCLK = 5MHz
MCLK = 10MHz
MCLK = 25MHz
T
A
= 25°C
V
REF
= 3.5V
AMP = AD8038
Figure 28. Wideband SFDR vs. f
OUT
Frequency
04464-051
–90
–70
–50
–30
–10
SFDR (dB)
0
FREQUENCY (MHz)
–80
–60
–40
–20
0
T
A
= 25°
C
V
DD
= 5V
AMP = AD8038
65k CODES
2 4 6 8 10
12
Figure 29. Wideband SFDR, f
OUT
= 100 kHz, Clock = 25 MHz
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04464-052
–100
–70
–50
–30
–10
SFDR (dB)
0
FREQUENCY (MHz)
–80
–60
–40
–20
0
T
A
= 25°C
V
DD
= 5V
AMP = AD8038
65k CODES
0.5 1.5 3.0 3.5 4.01.0 2.0 2.5 4.5 5.0
–90
Figure 30. Wideband SFDR, f
OUT
= 500 kHz, Clock = 10 MHz