Datasheet

AD9609
Rev. 0 | Page 15 of 32
0
AD9609-20
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS, 50% duty
cycle clock, DCS disabled, unless otherwise noted.
0
–20
–40
–60
–80
–100
–120
20 4681
FREQUENCY (MHz)
AMPLITUDE (dB)
20MSPS
9.7MHz @ –1dBFS
SNR = 60.6dBFS (61.6dBFS)
SFDR = 81.3dBc
08541-024
Figure 23. AD9609-20 Single-Tone FFT with f
IN
= 9.7 MHz
0
–20
–40
–60
–80
–100
–120
20 46810
FREQUENCY (MHz)
AMPLITUDE (dB)
20MSPS
30.5MHz @ –1dBFS
SNR = 60.6dBFS (61.6dBFS)
SFDR = 84.0dBc
08541-026
Figure 24. AD9609-20 Single-Tone FFT with f
IN
= 30.5 MHz
90
80
60
40
20
10
0
70
50
30
–60 –50 –40 –30 –20
–10
0
INPUT AMPLITUDE (dBc)
SNR/SFDR (dBc/dBFS)
SFDR (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
08541-058
Figure 25. AD9609-20 SNR/SFDR vs. Input Amplitude (AIN) with f
IN
= 9.7 MHz