Datasheet

AD9258
Rev. A | Page 19 of 44
0
–20
–40
–60
–80
–100
–120
–140
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08124-074
SECOND HARMONIC
THIRD HARMONIC
01020304050
105MSPS
2.4MHz @ –1dBFS
SNR = 77.5dB (78.5dBFS)
SFDR = 90dBc
Figure 20. AD9258-105 Single-Tone FFT with f
IN
= 2.4 MHz
0
–20
–40
–60
–80
–100
–120
–140
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08124-075
SECOND
HARMONIC
THIRD HARMONIC
105MSPS
70.1MHz @ –1dBFS
SNR = 76.8dB (77.8dBFS)
SFDR = 93.5dBc
01020304050
Figure 21. AD9258-105 Single-Tone FFT with f
IN
= 70.1 MHz
0
–20
–40
–60
–80
–100
–120
–140
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08124-076
105MSPS
140.1MHz @ –1dBFS
SNR = 75.5dB (76.5dBFS)
SFDR = 85.0dBc
SECOND HARMONIC
THIRD HARMONIC
01020304050
Figure 22. AD9258-105 Single-Tone FFT with f
IN
= 140.1 MHz
0
–20
–40
–60
–80
–100
–120
–140
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08124-077
01020304050
105MSPS
200.3MHz @ –1dBFS
SNR = 74.0dB (75.0dBFS)
SFDR = 80dBc
THIRD HARMONIC
SECOND HARMONIC
Figure 23. AD9258-105 Single-Tone FFT with f
IN
= 200.3 MHz
0
–20
–40
–60
–80
–100
–120
–140
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08124-078
SECOND
HARMONIC
THIRD HARMONIC
105MSPS
70.1MHz @ –6dBFS
SNR = 72.0dB (78.0dBFS)
SFDR = 97dBc
01020304050
Figure 24. AD9258-105 Single-Tone FFT with f
IN
= 70.1 MHz with Dither
Enabled
120
100
80
60
40
20
0
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
INPUT AMPLITUDE (dBFS)
SNR/SFDR (dBc AND dBFS)
08124-079
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
Figure 25. AD9258-105 Single-Tone SNR/SFDR vs. Input Amplitude (A
IN
)
with f
IN
= 98.12 MHz