Datasheet

Data Sheet AD9237
Rev. B | Page 13 of 24
FREQUENCY (MHz)
AMPLITUDE (dBc)
0
–20
–40
–60
–80
–100
–120
0 30 32.5252015105
05455-095
SNR = 67.0dBFS
SFDR = 87.8dBFS
Figure 20. AD9237-65 Two-Tone FFT, f
IN1
= 45 MHz, f
IN2
= 46 MHz
FREQUENCY (MHz)
AMPLITUDE (dBc)
0
–20
–40
–60
–80
–100
–120
0 2015105
05455-021
SNR = 67.2dBFS
SFDR = 88.3dBFS
Figure 21. AD9237-40 Two-Tone FFT
f
IN1
= 45 MHz, f
IN2
= 46 MHz
FREQUENCY (MHz)
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–100
–120
0 30252015105
05455-094
SNR = 66.9dBFS
SFDR = 84.1dBFS
Figure 22. AD9237-65 Two-Tone FFT, f
IN1
= 69 MHz, f
IN2
= 70 MHz
SFDR dBFS
SFDR dBc
SNR dBc
INPUT AMPLITUDE (AIN)
SNR/SFDR (dBc and dBFS)
100
30
40
50
60
70
80
90
–30 –10 –6.5–15–20–25
05455-024
SNR dBFS
Figure 23. AD9237-65 Two-Tone SNR/SFDR , vs. Analog Input with
f
IN1
= 45 MHz, f
IN2
= 46 MHz
SFDR dBFS
SFDR dBc
SNR dBc
INPUT AMPLITUDE (AIN)
SNR/SFDR (dBc and dBFS)
100
30
40
50
60
70
80
90
–30 –10 –6.5–15–20–25
05455-025
SNR dBFS
Figure 24. AD9237-40 Two-Tone SNR/SFDR , vs. Analog Input with
f
IN1
= 45 MHz, f
IN2
= 46 MHz
SFDR dBFS
SFDR dBc
SNR dBc
INPUT AMPLITUDE (AIN)
SNR/SFDR (dBc and dBFS)
100
30
40
50
60
70
80
90
–30 –10 –6.5–15–20–25
05455-098
SNR dBFS
Figure 25. AD9237-65 Two-Tone SNR/SFDR vs. Analog Input with
f
IN1
= 69 MHz, f
IN2
= 70 MHz