Datasheet

AD9260
Rev. C | Page 15 of 44
TYPICAL AC CHARACTERIZATION CURVES VS. DECIMATION MODE
AVDD = DVDD = DRVDD = +5 V, 4 V Input Span, Differential DC Coupled Input with CML = 2 V, A
IN
= 0.5 dBFS Full Bias.
50
55
60
65
70
75
SINAD (dBFS)
80
85
90
INPUT FREQUENCY (MHz)
0.1 1.0 10.0
00581-C-017
8 × MODE
4 × MODE
2 × MODE
1 × MODE
Figure 17. SINAD vs. Input Frequency (f
CLOCK
= 20 MSPS) 8x SINAD
performance limited by noise contribution of input differential
op amp driver
–110
–100
–90
–80
–70
–60
–50
THD (dBFS)
INPUT FREQUENCY (MHz)
0.1 1.0 10.0
00581-C-018
8 × MODE
4 × MODE
2 × MODE
1 × MODE
Figure 18. THD vs. Input Frequency (f
CLOCK
= 20 MSPS)
–110
–100
–90
–80
–70
–60
–50
SFDR (dBFS)
INPUT FREQUENCY (MHz)
0.1 1.0 10.0
00581-C-019
8 × MODE
4 × MODE
2 × MODE
1 × MODE
Figure 19. SFDR vs. Input Frequency (f
CLOCK
= 20 MSPS)
50
55
60
65
70
75
SINAD (dBFS)
80
85
90
INPUT FREQUENCY (MHz)
0.1 1.0 10.0
00581-C-020
8 × MODE
4 × MODE
2 × MODE
1 × MODE
Figure 20. SINAD vs. Input Frequency (f
CLOCK
= 10 MSPS)
–120
–115
–110
–105
–100
–95
–90
–85
–80
–75
–70
THD (dBFS)
INPUT FREQUENCY (MHz)
0.1 1.0 10.0
00581-C-021
8 × MODE
4 × MODE
2 × MODE
1 × MODE
Figure 21. THD vs. Input Frequency (f
CLOCK
= 10 MSPS)
–120
–115
–110
–105
–100
–95
–90
–85
–80
–75
–70
SFDR (dBFS)
INPUT FREQUENCY (MHz)
0.1 1.0 10.0
00581-C-022
8 × MODE
4 × MODE
2 × MODE
1 × MODE
Figure 22. SFDR vs. Input Frequency (f
CLOCK
= 10 MSPS)