Datasheet

AD9444
Rev. 0 | Page 17 of 40
–120
–100
–80
–60
–40
–20
0 5 10 15 20 25 30 35 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
05089-024
0
SFDR: 102dBFS
Figure 24. 32K Point Two-Tone FFT 80 MSPS/9.8 MHz/10.8 MHz
–120
–100
–80
–60
–40
–20
0 5 10 15 20 25 30 35 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
05089-025
0
–110
–90
–70
–50
–30
–10
SFDR: –100dBFS
Figure 25. 32K Point Two-Tone FFT 80 MSPS/69.3 MHz/70.3 MHz
70
75
80
85
90
95
100
20 30 40 50 60 70 80 90 100 110
SAMPLE RATE (MSPS)
SFDR (dB)
05089-026
Figure 26. SFDR vs. Sample Rate, V
IN
= 10.3 MHz @ −0.5 dBFS
–120
–100
–80
–60
–40
–20
IMD (dBFS)
05089-027
0
–110
–90
–70
–50
–30
–10
–110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
ANALOG INPUT LEVEL (dBFS)
WORST THIRD-ORDER IMD (dBFS)
SFDR (dBFS)
WORST THIRD-ORDER IMD (dBc)
90dBFS REFERENCE LINE
SFDR (dBc)
Figure 27. Two-Tone SFDR vs. Analog Input Level, A
IN
= 9.8 MHz/10.8 MHz
–120
–100
–80
–60
–40
–20
SFDR AND IMD3 (dB)
05089-028
0
–110
–90
–70
–50
–30
–10
–110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
ANALOG INPUT LEVEL (dBFS)
WORST THIRD-ORDER IMD (dBFS)
SFDR (dBFS)
WORST THIRD-ORDER IMD (dBc)
90dBFS REFERENCE LINE
SFDR (dBc)
Figure 28. Two-Tone SFDR vs. Analog Input Level, A
IN
= 69.3 MHz/70.3 MHz
70
75
80
85
90
95
100
10 20 30 40 50 60 70 80 90 100 110
SAMPLE RATE (MSPS)
SFDR (dB)
05089-029
Figure 29. SFDR vs. Sample Rate, V
IN
= 70.3 MHz @ −0.5 dBFS