
ICS844002-01
FEMTOCLOCKS CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
IDT / ICS LVDS FREQUENCY SYNTHESIZER
10
ICS844002AG-01 REV. A SEPTEMBER 28, 2007
3.3V, 2.5V LVDS Driver Termination
A general LVDS interface is shown in Figure 4. In a 100
differential transmission line environment, LVDS drivers require a
matched load termination of 100
across near the receiver input.
For a multiple LVDS outputs buffer, if only partial outputs are used,
it is recommended to terminate the unused outputs.
Figure 4. Typical LVDS Driver Termination
LVDS Driver
R1
100
–
+
50
50
3.3V or 2.5V
V
DD
100
Differential Transmission Line