Datasheet

Data Sheet AD9237
Rev. B | Page 11 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 3.0 V, DRVDD = 2.5 V, maximum sample rate with DCS disabled, T
A
= 25°C, 2 V p-p differential input, A
IN
= –0.5 dBFS,
VREF = 1.0 V internal, FFT length 16 K, unless otherwise noted.
FREQUENCY (MHz)
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–100
–120
0 106 842
05455-008
SNR = 66.9dBc
SFDR = 87.0dBc
Figure 8. AD9237-20 10 MHz FFT
FREQUENCY (MHz)
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–100
–120
0 2012 1684 1810 1462
05455-009
SNR = 66.8dBc
SFDR = 83.1dBc
Figure 9. AD9237-40 20 MHz FFT
FREQUENCY (MHz)
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–100
–120
05455-010
SNR = 66.0dBc
SFDR = 78.6dBc
0 30 32.5252015105
Figure 10. AD9237-65 70 MHz FFT
CLOCK FREQUENCY (MSPS)
SNR/SFDR (dBc)
90
85
80
75
70
65
60
10.0 20.017.515.012.5
05455-011
SNR
SFDR
Figure 11. AD9237-20 SNR/SFDR vs. Clock Frequency with f
IN
= 10 MHz
CLOCK FREQUENCY (MSPS)
SNR/SFDR (dBc)
90
85
80
75
SFDR
SNR
70
65
20 40353025
05455-012
Figure 12. AD9237-40 SNR/SFDR vs. Clock Frequency with f
IN
= 20 MHz
CLOCK FREQUENCY (MSPS)
SNR/SFDR (dBc)
90
85
80
75
70
65
60
40 6555 605045
05455-013
SNR
SFDR
Figure 13. AD9237-65 SNR/SFDR vs. Clock Frequency with f
IN
= 35 MHz