Datasheet

Data Sheet AD9645
Rev. 0 | Page 15 of 36
AD9645-125
0
–140
–120
–100
–80
–60
–40
–20
0 10 20 30 40 50 60
AMPLITUDE (dBFS)
FREQUENCY (MHz)
125MSPS
9.7MHz AT –1dBFS
SNR = 74.2dB (75.2dBFS)
SFDR = 93.7dBc
10537-026
Figure 26. Single-Tone 16k FFT with f
IN
= 9.7 MHz, f
SAMPLE
= 125 MSPS
0
–140
–120
–100
–80
–60
–40
–20
0 20 40 60
AMPLITUDE (dBFS)
FREQUENCY (MHz)
125MSPS
30.5MHz AT –1dBFS
SNR = 73.9dB (74.9dBFS)
SFDR = 96.8dBc
10537-027
Figure 27. Single-Tone 16k FFT with f
IN
= 30.5 MHz, f
SAMPLE
= 125 MSPS
0
–140
–120
–100
–80
–60
–40
–20
0 20 40 60
AMPLITUDE (dBFS)
FREQUENCY (MHz)
125MSPS
70.2MHz AT –1dBFS
SNR = 73.2dB (74.2dBFS)
SFDR = 92.1dBc
10537-028
Figure 28. Single-Tone 16k FFT with f
IN
= 70.2 MHz, f
SAMPLE
= 125 MSPS
0
–140
–120
–100
–80
–60
–40
–20
0 20 40 60
AMPLITUDE (dBFS)
FREQUENCY (MHz)
125MSPS
139.5MHz AT –1dBFS
SNR = 71.2dB (72.2dBFS)
SFDR = 90.7dBc
10537-029
Figure 29. Single-Tone 16k FFT with f
IN
= 139.5 MHz, f
SAMPLE
= 125 MSPS
0
–140
–120
–100
–80
–60
–40
–20
0 20 40 60
AMPLITUDE (dBFS)
FREQUENCY (MHz)
125MSPS
200.5MHz AT –1dBFS
SNR = 69.4dB (70.4dBFS)
SFDR = 81.5dBc
10537-030
Figure 30. Single-Tone 16k FFT with f
IN
= 200.5 MHz, f
SAMPLE
= 125 MSPS
0
–15
–30
–45
–60
–75
–105
–90
–120
–135
0 6 12 18 24 30 36 48 54 6042
AMPLITUDE (dBFS)
FREQUENCY (MHz)
10537-031
125MSPS
200.5MHz AT –1dBFS
SNR = 70.6dB (71.6dBFS)
SFDR = 81.3dBc
Figure 31. Single-Tone 16k FFT with f
IN
= 200.5 MHz, f
SAMPLE
= 125 MSPS,
Clock Divide = Divide-by-8