Datasheet

AD9834
Rev. C | Page 10 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
MCLK FREQUENCY (MHz)
4.0
0
0
75
5V
3V
T
A
= 25°C
I
DD
(mA)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
15 30 45 60
02705-007
Figure 7. Typical Current Consumption (I
DD
) vs. MCLK Frequency
4.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
f
OUT
(Hz)
I
DD
(mA)
T
A
= 25°C
5V
3V
100 1k 10k 100k 1M 10M 100M
02705-008
Figure 8. Typical I
DD
vs. f
OUT
for f
MCLK
= 50 MHz
MCLK FREQUENCY (MHz)
SFDR (dBc)
–65
–
60
–90
–70
–75
–80
–85
AVDD = DVDD = 3V
T
A
= 25°C
SFDR dB MCLK/50
SFDR dB MCLK/7
01530456075
02705-009
Figure 9. Narrow-Band SFDR vs. MCLK Frequency
0
–10
–20
–30
–40
–50
–60
–70
–80
MCLK FREQUENCY (MHz)
SFDR (dBc)
0 10203040506070
f
OUT
= 1MHz
SFDR dB MCLK/7
AVDD = DVDD = 3V
T
A
= 25°C
02705-010
Figure 10. Wideband SFDR vs. MCLK Frequency
SFDR (dBc)
0
–40
–80
–50
–60
–70
–10
–20
–30
50MHz CLOCK
30MHz CLOCK
AVDD = DVDD = 3V
T
A
= 25°C
f
OUT
/f
MCLK
0.001 0.01 0.1 1.0 10 100
0
2705-011
Figure 11. Wideband SFDR vs. f
OUT
/f
MCLK
for Various MCLK Frequencies
MCLK FREQUENCY (MHz)
SNR (dB)
–60
–65
–70
–50
–55
–
40
–45
1.0 5.0 10.0 12.5 25.0 50.0
T
A
= 25°C
AVDD = DVDD = 3V
f
OUT
= MCLK/4096
02705-012
Figure 12. SNR vs. MCLK Frequency