Datasheet

AD9634
Rev. 0 | Page 16 of 32
0
–140
–120
–100
–80
–60
–40
–20
0 125100755025
SECOND
HARMONIC
THIRD
HARMONIC
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
90.1MHz @ –1.0dBFS
SNR = 69.0dB (70.0dBFS)
SFDR = 89dBc
09996-026
Figure 28. AD9634-250 Single-Tone FFT with f
IN
= 90.1 MHz
0
–140
–120
–100
–80
–60
–40
–20
0125
100755025
SECOND
HARMONIC
THIRD
HARMONIC
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
185.1MHz @ –1.0dBFS
SNR = 68.7dB (69.7dBFS)
SFDR = 87dBc
09996-027
Figure 29. AD9634-250 Single-Tone FFT with f
IN
= 185.1 MHz
0
–20
–40
–60
–80
–100
–120
–140
0 25 50 75 100 125
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
220.1MHz @ –1.0dBFS
SNR = 68.3dB (69.3dBFS)
SFDR = 91dBc
SECOND
HARMONIC
THIRD
HARMONIC
09996-028
Figure 30. AD9634-250 Single-Tone FFT with f
IN
= 220.1 MHz
0
–20
–40
–60
–80
–100
–120
–140
0 25 50 75 100 125
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
305.1MHz @ –1.0dBFS
SNR = 67.4dB (68.4dBFS)
SFDR = 82dBc
SECOND
HARMONIC
THIRD
HARMONIC
09996-101
Figure 31. AD9634-250 Single-Tone FFT with fI
N
= 305.1 MHz
120
0
20
40
60
80
100
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
SNR/SFDR (dBc and dBFS)
INPUT AMPLITUDE (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
09996-029
Figure 32. AD9634-250 Single-Tone SNR/SFDR vs. Input Amplitude (A
IN
) with
f
IN
= 90.1 MHz, f
S
= 250 MSPS
100
95
90
85
80
75
70
65
60
60 90 120 150 180 210 240 270 300 330
SNR/SFDR (dBc and dBFS)
INPUT FREQUENCY (MHz)
SNR (dBFS)
SFDR (dBc)
09996-030
Figure 33. AD9634-250 Single-Tone SNR/SFDR vs. Input Frequency (f
IN
),
f
S
= 250 MSPS