Datasheet

AD9522-1
Rev. 0 | Page 22 of 84
0.4
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
032.52.01.51.00.5
DIFFERENTIAL SWING (V p-p)
TIME (ns)
.0
07220-015
Figure 18. LVDS Differential Voltage Swing @ 800 MHz,
Output Terminated 100 Ω Across Differential Pair
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
0860 1004020 7050 903010
AMPLITUDE (V)
TIME (ns)
0
07220-018
Figure 19. CMOS Output with 10 pF Load @ 25 MHz
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
010987654321
AMPLITUDE (V)
TIME (ns)
2pF LOAD
10pF
LOAD
07220-019
Figure 20. CMOS Output with 2 pF and 10 pF Load @ 250 MHz
1600
1400
1200
1000
800
600
400
200
0
0 1000600 800400200
DIFFERENTIAL SWING (mV p-p)
FREQUENCY (GHz)
7mA SETTING
DEFAULT 3.5mA SETTING
07220-123
Figure 21. LVDS Differential Voltage Swing vs. Frequency,
Output Terminated 100 Ω Across Differential Pair
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
07
2pF
10pF
20pF
600500400300200100
AMPLITUDE (V)
FREQUENCY (MHz)
00
07220-124
Figure 22. CMOS Output Swing vs. Frequency and Capacitive Load
–
50
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
1k 100M1M 10M100k10k
PHASE NOISE (dBc/Hz)
FREQUENCY (Hz)
07220-023
Figure 23. Internal VCO Phase Noise (Absolute), LVDS Output @ 567.5 MHz