Datasheet

AD9238
Rev. C | Page 14 of 48
CLOCK FREQUENCY
SINAD (dBc)
72
70
74
0
68
20 40 60
SINAD –65
SINAD –40
SINAD –20
12.0
11.5
11.0
02640-022
Figure 23. SINAD vs. FS with Nyquist Input
DUTY CYCLE (%)
85
SINAD/SFDR (dBc)
80
75
70
95
65
30
60
40 45 50 55 60 65
55
50
DCS ON (SINAD)
DCS ON (SFDR)
DCS OFF (SINAD)
DCS OFF (SFDR)
90
35
02640-023
Figure 24. SINAD/SFDR vs. Clock Duty Cycle
TEMPERATURE (°C)
80
SINAD/SFDR (dB)
78
76
74
84
72
–50
70
0 50 100
68
66
SINAD
SFDR
82
02640-024
Figure 25. SINAD/SFDR vs. Temperature with f
IN
= 32.5 MHz
SAMPLE RATE (MSPS)
500
AVDD POWER (mW)
400
300
200
600
100
0102030405060
–65
–40
–20
02640-025
Figure 26. Analog Power Consumption vs. FS
CODE
0.6
–0.8
INL (LSB)
0.4
0.2
0
–0.2
–0.4
–0.6
0.8
1.0
–1.0
150010005000 2000 2500 3000 3500 4000
02640-026
Figure 27. AD9238-65 Typical INL
CODE
0.6
–0.8
DNL (LSB)
0.4
0.2
0
–0.2
–0.4
–0.6
0.8
1.0
–1.0
150010005000 2000 2500 3000 3500 4000
02640-027
Figure 28. AD9238-65 Typical DNL