AD9268
0
–20
–40
–60
0
–20
–40
–60
105MSPS
105MSPS
200.3MHz @ –1dBFS
SNR = 74.0dB (75.0dBFS)
SFDR = 79dBc
2.4MHz @ –6dBFS
SNR = 78.2dB (79.2dBFS)
SFDR = 90dBc
SECOND
HARMONIC
THIRD HARMONIC
SECOND HARMONIC
THIRD HARMONIC
–80
–100
–120
–80
–100
–120
–140
–140
0
10
20
30
40
50
0
10
20
30
40
50
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 20. AD9268-105 Single-Tone FFT with fIN = 2.4 MHz
Figure 23. AD9268-105 Single-Tone FFT with fIN = 200.3 MHz
0
0
105MSPS
105MSPS
70.1MHz @ –1dBFS
–20 SNR = 77.5dB (78.5dBFS)
SFDR = 93.0dBc
70.1MHz @ –6dBFS
SNR = 72.7dB (78.7dBFS)
SFDR = 97.6dBc
–20
–40
–60
–40
–60
SECOND
HARMONIC
SECOND
HARMONIC
THIRD HARMONIC
THIRD HARMONIC
–80
–100
–120
–80
–100
–120
–140
–140
0
10
20
30
40
50
0
10
20
30
40
50
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 21. AD9268-105 Single-Tone FFT with fIN = 70.1 MHz
Figure 24. AD9268-105 Single-Tone FFT with fIN = 70.1 MHz with Dither
Enabled
120
100
80
0
105MSPS
140.1MHz @ –1dBFS
SNR = 75.7dB (76.7dBFS)
SFDR = 85.5dBc
–20
–40
–60
SECOND HARMONIC
THIRD HARMONIC
60
–80
–100
–120
40
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
20
0
SFDR (dBFS)
–140
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10
0
0
10
20
30
40
50
INPUT AMPLITUDE (dBFS)
FREQUENCY (MHz)
Figure 25. AD9268-105 Single-Tone SNR/SFDR vs. Input Amplitude (AIN
)
Figure 22. AD9268-105 Single-Tone FFT with fIN = 140.1 MHz
with fIN = 98.12 MHz
Rev. A | Page 19 of 44
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