50
48 fS = 200MSPS
fIN = 10.3MHz
46
SNR
44
SINAD
42
40
38
36
34
32
30
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
ENCODE PULSEWIDTH – ns
Figure 15. SNR vs. Clock Pulsewidth, (tPWH): fS = 200 MSPS
AD9054A
–70
–68
2ND HARMONIC
–66
–64
–62
–60
–58
3RD HARMONIC
–56
–54
–52
–50
–48
–46
25 50 75 100 125 150 175 200 225 250 270 300
fS – MSPS
Figure 18. Harmonic Distortion vs. fS: fIN = 19.7 MHz
46
45
44
20M H z
43
42
70M H z
50M H z
41
40
39
38
–60 –40 –20 0
20 40
TC – ؇C
60 80 100
Figure 16. SINAD vs. Temperature: fS = 135 MSPS
–60
2ND HARMONIC
–50
–40
3RD HARMONIC
–30
–20
–10
0
25 50 75 100 125 150 175 200 225 250 270 300
fS – MSPS
Figure 19. Harmonic Distortion vs. fS: fIN = 70.1 MHz
46
45
44
20MHz
43
50MHz
42
70MHz
41
40
39
38
–60 –40 –20 0
20 40
60
80 100
TC – ؇C
Figure 17. SINAD vs. Temperature: fS = 200 MSPS
–40
–45
–50
–55
70M H z
–60
50M H z
–65
20M H z
–70
–60 –40 –20 0
20 40
TC – ؇C
60 80 100
Figure 20. 2nd Harmonic vs. Temperature: fS = 135 MSPS
REV. B
–9–