Datasheet

Data Sheet AD9257
Rev. A | Page 11 of 40
TYPICAL PERFORMANCE CHARACTERISTICS
AD9257-65
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
3
6
9
12
15
18
21 24
27 30
AMPLITUDE (dBFS)
FREQUENCY (MHz)
65MSPS
9.7MHz AT –1dBFS
SNR = 74.7dB (75.7dBFS)
SFDR = 93.5dBc
10206-006
Figure 6. Single-Tone 16k FFT with f
IN
= 9.7 MHz, f
SAMPLE
= 65 MSPS
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
3
6 9 12
15 18 21
24 27 30
AMPLITUDE (dBFS)
FREQUENCY (MHz)
65MSPS
63.5MHz AT –1dBFS
SNR = 73.9dB (74.9dBFS)
SFDR = 95.4dBc
10206-007
Figure 7. Single-Tone 16k FFT with f
IN
= 63.5 MHz, f
SAMPLE
= 65 MSPS, CLK
Divider = 8
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
3
6 9 12
15 18 21 24
27 30
AMPLITUDE (dBFS)
FREQUENCY (MHz)
10206-008
2F1 + F2
2F1 – F2
2F2 + F1
2F2 – F1
F2 – F1
F1 + F2
Figure 8. Two-Tone 16k FFT with f
IN1
= 30 MHz and f
IN2
= 32 MHz,
f
SAMPLE
= 65 MSPS
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
3
6
9
12 15 18 21 24 27 30
AMPLITUDE (dBFS)
FREQUENCY (MHz)
65MSPS
19.7MHz AT –1dBFS
SNR = 74.7dB (75.7dBFS)
SFDR = 96.7dBc
10206-009
Figure 9. Single-Tone 16k FFT with f
IN
= 19.7 MHz, f
SAMPLE
= 65 MSPS, CLK
Divider = 8
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
3
6 9
12 15 18
21 24 27 30
AMPLITUDE (dBFS)
FREQUENCY (MHz)
65MSPS
30.5MHz AT –1dBFS
SNR = 74.7dB (75.7dBFS)
SFDR = 96.7dBc
10206-109
Figure 10. Single-Tone 16k FFT with f
IN
= 30.5 MHz, f
SAMPLE
= 65 MSPS, CLK
Divider = 8
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
3
6 9
12 15
18 21
24 27
30
AMPLITUDE (dBFS)
FREQUENCY (MHz)
65MSPS
123.4MHz AT –1dBFS
SNR = 72.2dB (73.2dBFS)
SFDR = 83.0dBc
10206-010
Figure 11. Single-Tone 16k FFT with f
IN
= 123.4 MHz, f
SAMPLE
= 65 MSPS, CLK
Divider = 8