Datasheet

AD9777
Rev. C | Page 15 of 60
50
55
60
65
70
75
IMD (dBc)
80
85
90
20 300 10 405060
FREQUENCY (MHz)
4 ×
8 ×
1 ×
2 ×
02706-018
Figure 18. Third-Order IMD Products vs. Two-Tone f
OUT
and Interpolation
Rate, 1× f
DATA
= 160 MSPS, 2× f
DATA
= 160 MSPS,
4× f
DATA
= 80 MSPS, 8× f
DATA
= 50 MSPS
50
55
60
65
70
75
IMD (dBc)
80
85
90
A
OUT
(dBFS)
–15 –5–10 0
8×
2×
1×
4×
02706-019
Figure 19. Third-Order IMD Products vs. Two-Tone A
OUT
and Interpolation
Rate, f
DATA
= 50 MSPS in All Cases, 1× f
DAC
= 50 MSPS, 2× f
DAC
= 100 MSPS,
4× f
DAC
= 200 MSPS, 8× f
DAC
= 400 MSPS
50
55
60
65
70
75
SFDR (dBc)
80
85
90
AVDD (V)
3.23.1 3.3 3.4 3.5
0dBFS
–6dBFS
–12dBFS
02706-020
Figure 20. SFDR vs. AVDD f
OUT
= 10 MHz, f
DAC
= 320 MSPS, f
DATA
= 160 MSPS
50
55
60
65
70
75
IMD (dBc)
80
85
90
AVDD (V)
3.23.1 3.3 3.4 3.5
0dBFS
–6dBFS
–3dBFS
02706-021
Figure 21. Third-Order IMD Products vs. AVDD @ f
OUT
= 10 MHz,
f
DAC
= 320 MSPS, f
DATA
= 160 MSPS
50
55
60
65
70
75
SNR (dB)
80
85
90
INPUT DATA RATE (MSPS)
0 10050 150
PLL OFF
PLL ON
02706-022
Figure 22. SNR vs. Data Rate for f
OUT
= 5 MHz
50
55
60
65
70
75
SFDR (dBc)
80
85
90
TEMPERATURE (°C)
–50 500 100
78MSPS
160MSPS
f
DATA
= 65MSPS
02706-023
Figure 23. SFDR vs. Temperature @ f
OUT
= f
DATA
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