Datasheet

AD9645 Data Sheet
Rev. 0 | Page 14 of 36
0.6
–0.6
1
DNL (LSB)
OUTPUT CODE
10537-021
–0.4
–0.2
0
0.4
0.2
1367 2733 4099 5465 6831 8197 9563
10929 12295 13661 15027 16393
Figure 21. DNL; f
IN
= 9.7 MHz, f
SAMPLE
= 80 MSPS
900,000
500,000
600,000
700,000
800,000
400,000
300,000
200,000
0
100,000
N – 5 N – 4
N – 3
N – 2 N – 1 N + 1 N + 2 N + 3 N + 4 N + 5N
NUMBER OF HITS
CODE
0.95LSB rms
10537-022
Figure 22. Input Referred Noise Histogram; f
SAMPLE
= 80 MSPS
90
0
1 10
PSRR (dB)
FREQUENCY (MHz)
10
20
30
40
50
60
70
80
AVDD
DRVDD
10537-023
Figure 23. PSRR vs. Frequency; f
CLK
= 125 MHz, f
SAMPLE
= 80 MSPS
10537-024
110
0
10 5030 70 90
SNR/SFDR (dBFS/dBc)
SAMPLE RATE (MSPS)
10
20
30
40
60
50
70
90
80
100
SFDR
SNRFS
Figure 24. SNR/SFDR vs. Sample Rate; f
IN
= 9.7 MHz, f
SAMPLE
= 80 MSPS
10 5030 70 90
SNR/SFDR (dBFS/dBc)
SAMPLE RATE (MSPS)
10537-025
110
0
10
20
30
40
60
50
70
90
80
100
SFDR
SNRFS
Figure 25. SNR/SFDR vs. Sample Rate; f
IN
= 70 MHz, f
SAMPLE
= 80 MSPS