Datasheet

AD9244
Rev. C | Page 12 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 5.0 V, DRVDD = 3.0 V, f
SAMPLE
= 65 MSPS with CLK duty cycle stabilizer enabled, T
A
= 25°C, differential analog input, common-
mode voltage (V
CM
) = 2.5 V, input amplitude (A
IN
) = −0.5 dBFS, VREF = 2.0 V external, FFT length = 8K, unless otherwise noted.
02404-010
FREQUENCY (MHz)
32.50105 15202530
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–120
–100
SNR = 74.8dBc
SFDR = 93.6dBc
Figure 10. Single-Tone FFT, f
IN
= 5 MHz
02404-011
FREQUENCY (MHz)
32.50 10.05.0 15.0 20.0 25.0 30.0
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–100
–120
SNR = 74.0dBc
SFDR = 87.0dBc
Figure 11. Single-Tone FFT, f
IN
= 31 MHz
02404-012
FREQUENCY (MHz)
0 5 10 15 20 25 30
AMPLITUDE (dBFS)
0
–20
–40
–60
–100
–80
–120
SNR = 66.5dBc
SFDR = 74.0dBc
Figure 12. Single-Tone FFT, f
IN
= 190 MHz, f
SAMPLE
= 61.44 MSPS
02404-013
A
IN
(dBFS)
0–30 –25 –20 –15 –10 –5
dBFS AND dBc
100
80
90
70
60
50
40
SFDR (dBFS)
SNR (dBFS)
SNR (dBc)
SFDR = 90dBc
REFERENCE LINE
SFDR (dBc)
Figure 13. Single-Tone SNR/SFDR vs. A
IN
, f
IN
= 5 MHz
02404-014
A
IN
(dBFS)
030 –25 –20 –15 –10 –5
dBFS AND dBc
100
90
80
70
60
50
40
SFDR (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR = 90dBc
REFERENCE LINE
Figure 14. Single-Tone SNR/SFDR vs. A
IN
, f
IN
= 31 MHz
02404-015
A
IN
(dBFS)
0–30 –25 –20 –15 –10 –5
dBFS AND dBc
100
90
80
70
60
50
40
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
SFDR = 90dBc
REFERENCE LINE
Figure 15. Single-Tone SNR/SFDR vs. A
IN
, f
IN
= 190 MHz, f
SAMPLE
= 61.44 MSPS