ICS845204 Datasheet, PDF (10/13 Pages) Integrated Device Technology – CRYSTAL-TO-MLVDS PCI EXPRESS™ CLOCK SYNTHESIZER W/SPREAD SPECTRUM

ICS845204
CRYSTAL-TO-MLVDS CLOCK SYNTHESIZER W/SPREAD SPECTRUM
ADVANCE INFORMATION
3.3V M-LVDS Driver Termination
A general M-LVDS interface is shown in Figure 5 In a 100Ω
differential transmission line environment, M-LVDS drivers require
a matched load termination of 100Ω across near the receiver input.
For a multiple M-LVDS outputs buffer, if only partial outputs are
used, it is recommended to terminate the unused outputs.
3.3V
LVDS Driver
50Ω
R2
100Ω
50Ω
R1
100Ω
100Ω Differential Transmission Line
Figure 5. Typical M-LVDS Driver Termination
3.3V
+
–
Reliability Information
Table 7. θ_JA vs. Air Flow Table for a 32Lead VFQFN
Meters per Second
θ_JA vs. Air Flow
0
Multi-Layer PCB, JEDEC Standard Test Boards
42.4°C/W
Transistor Count
The transistor count for ICS845204 is: 3749
1
37.0°C/W
2.5
33.2°C/W
IDT™ / ICS™ M-LVDS CLOCK SYNTHESIZER
10
ICS845204AK SEPTEMBER 25, 2007