参数资料
型号: AD9518-3A/PCBZ
厂商: Analog Devices Inc
文件页数: 9/64页
文件大小: 0K
描述: BOARD EVALUATION FOR AD9518-3A
设计资源: AD9518 Schematics
AD9518 Gerber Files
AD9518-3 BOM
标准包装: 1
主要目的: 计时,时钟发生器
嵌入式:
已用 IC / 零件: AD9518-3A
主要属性: 2 输入,6 输出,2.0GHz VCO
次要属性: LVPECL 输出逻辑
已供物品:
Data Sheet
AD9518-3
Rev. B | Page 17 of 64
1.9
1.7
1.5
1.3
1.1
0.9
1.71.8
1.92.02.12.22.3
V
CO
T
UNI
NG
V
O
L
T
AG
E
(
V
)
VCO FREQUENCY (GHz)
06
43
2-
1
38
Figure 11. VCO Tuning Voltage vs. Frequency
(Note that VCO calibration centers the dc tuning voltage
for the PLL setup that is active during calibration.)
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
0
CENTER 122.88MHz
SPAN 50MHz
5MHz/DIV
RE
L
AT
IV
E
P
O
W
E
R
(
d
B)
06
43
2-
1
37
Figure 12. PFD/CP Spurs; 122.88 MHz; PFD = 15.36 MHz;
LBW = 127 kHz; ICP = 3.0 mA; fVCO = 2.21 GHz
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
0
CENTER 122.88MHz
SPAN 1MHz
100kHz/DIV
R
E
L
AT
IV
E
P
O
W
E
R
(
d
B)
06
43
2-
1
3
5
Figure 13. Output Spectrum, LVPECL; 122.88 MHz; PFD = 15.36 MHz;
LBW = 127 kHz; ICP = 3.0 mA; fVCO = 2.21 GHz
1.0
0.6
0.2
–0.2
–0.6
–1.0
02
20
15
10
5
D
IFF
E
R
E
N
TI
A
L
O
U
TP
U
T
(
V
)
TIME (ns)
5
06
43
2-
0
14
Figure 14. LVPECL Output (Differential) at 100 MHz
1.0
0.6
0.2
–0.2
–0.6
–1.0
02
1
D
IFF
E
R
E
N
TI
A
L
O
U
TP
U
T
(
V
)
TIME (ns)
06
43
2-
0
15
Figure 15. LVPECL Output (Differential) at 1600 MHz
1600
800
1000
1200
1400
03
2
1
D
IF
F
ER
E
N
T
IA
L
SW
IN
G
(
m
V
p
-p
)
FREQUENCY (GHz)
06
43
2-
0
20
Figure 16. LVPECL Differential Swing vs. Frequency,
Using a Differential Probe Across the Output Pair
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