Datasheet

AD9244
Rev. C | Page 14 of 36
02404-022
INPUT FREQUENCY (MHz)
1400 20 40 60 80 100 120
HARMONICS (dBc)
–100
–95
–90
–85
–80
–75
FOURTH
HARMONIC
SECOND
HARMONIC
THIRD
HARMONIC
Figure 22. Harmonics vs. Input Frequency
02404-023
ENOB (Bits)
11.34
12.33
12.17
12.00
11.67
11.50
11.83
SAMPE RATE (MSPS)
1000 20406080
SINAD (dBc)
76
75
74
73
72
71
70
f
IN
= 20MHz
f
IN
= 10MHz
f
IN
= 2MHz
Figure 23. SINAD/ENOB vs. Sample Rate
02404-024
CODES (14-Bit)
163840 4096 8192 12288
INL (LSB)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
Figure 24. Typical INL
02404-025
DUTY CYCLE (%)
7030 35 40 45 50 55 60 65
SNR/SFDR (dBc)
100
95
90
85
80
75
60
65
60
SNR, DCS ON
SFDR, DCS ON
SFDR, DCS OFF
SNR, DCS OFF
Figure 25. SNR/SFDR vs. Duty Cycle, f
IN
= 2.5 MHz
02404-026
SAMPLE RATE (MSPS)
1000 20406080
SFDR (dBc)
100
96
92
88
84
80
f
IN
= 2MHz
f
IN
= 10MHz
f
IN
= 20MHz
Figure 26. SFDR vs. Sample Rate
02404-027
CODES (14-Bit)
163840 4096 8192 12288
DNL (LSB)
1.0
0.8
0.6
0.4
0.2
–0.4
–0.2
0
–0.6
–0.8
–1.0
Figure 27. Typical DNL