Datasheet

AD9246
Rev. A | Page 14 of 44
100
70
5 125
CLOCK FREQUENCY (MSPS)
SNR/SFDR (dBc)
95
90
85
80
75
25 45 65 85 105
SFDR
SNR
05491-030
Figure 30. AD9246 Single-Tone SNR/SFDR vs. Clock Frequency (f
S
)
with f
IN
= 2.4 MHz
100
60
20 80
DUTY CYCLE (%)
SNR/SFDR (dBc)
SFDR DCS ON
SFDR DCS OFF
SNR DCS OFF
SNR DCS ON
95
90
85
80
75
70
65
40 60
05491-027
Figure 31. AD9246 SNR/SFDR vs. Duty Cycle with f
IN
= 10.3 MHz
90
70
0.5 1.3
INPUT COMMON-MODE VOLTAGE (V)
SNR/SFDR (dBc)
85
80
75
0.6 0.7 0.8 0.9 1.0 1.1 1.2
SFDR
SNR
05491-031
Figure 32. AD9246 SNR/SFDR vs. Input Common Mode (VCM)
with f
IN
= 30 MHz
10
0
N – 4
OUTPUT CODE
NUMBER OF HITS (1M)
8
6
4
2
N – 3 N – 2 N – 1 N N + 1 N + 2 N + 3 N + 4
1.3 LSB rms
05491-084
Figure 33. AD9246 Grounded Input Histogram
2.0
–2.0
0 16384
OUTPUT CODE
INL ERROR (LSB)
2048 4096 6144 8192 10240 12288 14336
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
05491-024
Figure 34. AD9246 INL with f
IN
= 10.3 MHz
0.5
–0.5
0 16384
OUTPUT CODE
DNL ERROR (LSB)
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
2048 4096 6144 8192 10240 12288 14336
05491-021
Figure 35. AD9246 DNL with f
IN
= 10.3 MHz