Datasheet

AD9237 Data Sheet
Rev. B | Page 14 of 24
FREQUENCY (MHz)
AMPLITUDE (dBc)
0
–20
–40
–60
–80
–100
–120
0 2015105
05455-026
SNR = 67.1dBFS
SFDR = 87.3dBFS
Figure 26. AD9237-40 Two-Tone FFT
f
IN1
= 69 MHz, f
IN2
= 70 MHz
INPUT FREQUENCY (MHz)
SNR/SFDR (dBc)
90
85
80
SFDR
SNR
75
70
60
65
55
0 125100755025
05455-015
Figure 27. AD9237-65 SNR/SFDR vs. Input Frequency
CODE
INL (LSB)
1.00
–1.00
–0.75
–0.50
–0.25
0
0.25
0.50
0.75
0 4096358430722560204815361024512
05455-032
Figure 28. Typical INL
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
05455-097
SNR dBFS
Figure 29. AD9237-40 Two-Tone SNR/SFDR vs. Analog Input with
f
IN1
= 69 MHz, f
IN2
= 70 MHz
INPUT FREQUENCY (MHz)
SNR/SFDR (dBc)
90
55
60
65
70
75
80
85
0 125100755025
05455-016
SFDR
SNR
Figure 30. AD9237-40 SNR/SFDR vs. Input Frequency
CODE
DNL (LSB)
1.00
–1.00
–0.75
–0.50
–0.25
0
0.25
0.50
0.75
0 4096358430722560204815361024512
05455-035
Figure 31. Typical DNL