Datasheet

AD9628
Rev. 0 | Page 22 of 44
AD9628-105
AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.0 V internal reference, and DCS enabled, unless
otherwise noted.
–120
–100
–80
–60
–40
–20
0
0 10 20 30 40 50
AMPLITUDE (dBFS)
FREQUENCY (MHz)
105MSPS
9.7MHz AT –1dBFS
SNR = 70.8dB (71.8dBFS)
SFDR = 94dBc
09976-013
Figure 23. Single-Tone FFT with f
IN
= 9.7 MHz
–120
–100
–80
–60
–40
–20
0
0 10 20 30 40 50
AMPLITUDE (dBFS)
FREQUENCY (MHz)
105MSPS
30.5MHz AT –1dBFS
SNR = 70.7dB (71.7dBFS)
SFDR = 90.6dBc
09976-014
Figure 24. Single-Tone FFT with f
IN
= 30.5 MHz
–120
–100
–80
–60
–40
–20
0
0 10 20 30 40 50
AMPLITUDE (dBFS)
FREQUENCY (MHz)
105MSPS
70.1MHz AT –1dBFS
SNR = 70.3dB (71.3dBFS)
SFDR = 95dBc
09976-015
Figure 25. Single-Tone FFT with f
IN
= 70.1 MHz
–120
–100
–80
–60
–40
–20
0
AMPLITUDE (dBFS)
FREQUENCY (MHz)
0 10 20 30 40 50
105MSPS
100.5MHz AT –1dBFS
SNR = 70.2dB (71.2dBFS)
SFDR = 90.6dBc
09976-016
Figure 26. Single-Tone FFT with f
IN
= 100.5 MHz
–120
–100
–80
–60
–40
–20
0
0 10 20 30 40 50
AMPLITUDE (dBFS)
FREQUENCY (MHz)
105MSPS
200.5MHz AT –1dBFS
SNR = 68.7dB (69.7dBFS)
SFDR = 81dBc
09976-017
Figure 27. Single-Tone FFT with f
IN
= 200.5 MHz
50
55
60
65
70
75
80
85
90
95
100
0 50 100 150 200 250
SNR/SFDR (dBFS/dBc)
ANALOG INPUT FREQUENCY (MHz)
SFDR AT 25°C
SNRFS AT 25°C
09976-104
Figure 28. SNR/SFDR vs. Input Frequency (AIN) with 2 V p-p Full Scale