9FG430 Datasheet, PDF (8/18 Pages) Integrated Device Technology – Four Output Differential Frequency Generator for PCIe Gen3 and QPI

9FG430
Four Output Differential Frequency Generator for PCIe Gen3 and QPI
Termination for LVDS and other Common Differential Signals (figure 3)
Vdiff
Vp-p
Vcm
R1
R2
R3
R4
Note
0.45v 0.22v 1.08
33
150
100
100
0.58
0.28
0.6
33
78.7
137
100
0.80
0.40
0.6
33
78.7
none
100
ICS874003i-02 input compatible
0.60
0.3
1.2
33
174
140
100
Standard LVDS
R1a = R1b = R1
R2a = R2b = R2
Figure 3
L1
L1'
HCSL Output Buffer
R1a
R1b
L2
R3
L4
L4'
L2'
R2a
R2b
L3'
L3
R4
Down Device
REF_CLK Input
Termination for Cable AC Coupled Application (figure 4)
Component
Value
Note
R5a, R5b
8.2K 5%
R6a, R6b
1K 5%
Cc
0.1 µF
Vcm
0.350 volts
Figure 4
3.3 Volts
Cc
Cc
R5a
R5b
L4
L4'
R6a
R6b
PCIe Device
REF_CLK Input
Figure 5. REF Output Test Load
33
9FGxxx REF Output
Zo = 50 ohms
5pF
IDT^® Four Output Differential Frequency Generator for PCIe Gen3 and QPI
8
1681C—08/26/10