Datasheet

AD9637 Data Sheet
Rev. A | Page 14 of 40
AD9637-40
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
2
4 6 8
10 12
14 16
18
AMPLITUDE (dBFS)
FREQUENCY (MHz)
40MSPS
9.7MHz AT –1dBFS
SNR = 71.0dB (72.0dBFS)
SFDR = 96.9dBc
10215-020
Figure 21. Single-Tone 16k FFT with f
IN
= 9.7 MHz, f
SAMPLE
= 40 MSPS
2 4 6 8 10 12
14 16 18
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
AMPLITUDE (dBFS)
FREQUENCY (MHz)
40MSPS
30.5MHz AT –1dBFS
SNR = 70.9dB (7.19dBFS)
SFDR = 95.87dBc
10215-021
Figure 22. Single-Tone 16k FFT with f
IN
= 30.5 MHz, f
SAMPLE
= 40 MSPS , CLK
Divider = 8
2
4 6
8 10
12 14
16 18
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
AMPLITUDE (dBFS)
FREQUENCY (MHz)
10215-022
F2 – F1
2
F2 –
F1
2
F1 –
F2
2F2
+ F1
F1 + F2
+
2F1 + F2
Figure 23. Two-Tone 16k FFT with f
IN1
= 8 MHz and f
IN2
= 10 MHz,
f
SAMPLE
= 40 MSPS
2 4 6 8 10 12 14 16
18
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
AMPLITUDE (dBFS)
FREQUENCY (MHz)
40MSPS
19.7MHz AT –1dBFS
SNR = 70.9dB (71.9dBFS)
SFDR = 91.0dBc
10215-023
Figure 24. Single-Tone 16k FFT with f
IN
= 19.7 MHz, f
SAMPLE
= 40 MSPS, CLK
Divider = 8
2
4 6 8
10 12
14 16 18
0
–15
–30
–45
–75
–60
–105
–90
–120
–135
AMPLITUDE (dBFS)
FREQUENCY (MHz)
40MSPS
69.5MHz AT –1dBFS
SNR = 70.5dB (71.5dBFS)
SFDR = 88.6dBc
10215-024
Figure 25. Single-Tone 16k FFT with f
IN
= 69.5 MHz, f
SAMPLE
= 40 MSPS, CLK
Divider = 8
0
–20
–40
–60
–80
–100
–120
–90 –78 –66 –54 –42 –6–18–30
SFDR/IMD3 (dBc/dBFS)
INPUT AMPLITUDE (dBFS)
SFDR (dBc)
SFDR (dBFS)
IMD3 (dBc)
IMD3 (dBFS)
10215-025
Figure 26. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with
f
IN1
= 30 MHz and f
IN2
= 32 MHz, f
SAMPLE
= 40 MSPS