9ZXL1530_15 Datasheet, PDF (14/19 Pages) Integrated Device Technology – 15-OUTPUT DB1900Z LOW-POWER DERIVATIVE

9ZXL1530
15-OUTPUT DB1900Z LOW-POWER DERIVATIVE
DIF Reference Clock
Common Recommendations for Differential Routing
D imension or Value
L1 length, route as non-coupled 50ohm trace
0.5 max
L2 length, route as non-coupled 50ohm trace
0.2 max
L3 length, route as non-coupled 50ohm trace
0.2 max
Rs (100 ohm differential traces)
33
Rs (85 ohm differential traces)
27
Down Device Differential Routing
L4 length, route as coupled microstrip 100ohm differential trace
L4 length, route as coupled stripline 100ohm differential trace
2 min to 16 max
1.8 min to 14.4 max
Differential Routing to PCI Express Connector
L4 length, route as coupled microstrip 100ohm differential trace
L4 length, route as coupled stripline 100ohm differential trace
0.25 to 14 max
0.225 min to 12.6 max
Unit Figure
inch 1
inch 1
inch 1
ohm 1
ohm 1
inch 1
inch 1
inch 2
inch 2
Figure 1: Down Device Routing
L1
L2
Rs
L1'
L2'
Rs
LP-HCSL
Differential Output
L4
L4'
PCI Express
Down Device
REF_CLK Input
Figure 2: PCI Express Connector Routing
L1
L2
Rs
L1'
LP-HCSL
Differential Output
L2'
Rs
L4
L4'
PCI Express
Add-in Board
REF_CLK Input
IDT® 15-OUTPUT DB1900Z LOW-POWER DERIVATIVE
14
9ZXL1530
REV D 112015