TLK10031 Datasheet, PDF (138/146 Pages) Texas Instruments – TLK10031 Single-Channel XAUI/10GBASE-KR Transceiver

TLK10031
SLLSEL3A – JULY 2015 – REVISED AUGUST 2015
www.ti.com
Figure 10-2. Examples of High-speed PCB Traces With Vias That Have no Via Stubs and no Via Pads on
Internal Layers
To further improve on impedance matching, differential vias with neighboring ground vias can be used as
shown in Figure 10-3. The optimum dimensions of such a differential via structure depend on various
parameters such as the trace geometry, dielectric material, as well as the PCB layer stack-up. A 3D
electromagnetic field solver can be used to find the optimum via dimensions.
Figure 10-3. A Differential PCB Via Structure (Top View)
PCB traces connected to the HSRXAP/HSRXAN pins should have differential insertion loss of less than
25 dB at 5 GHz.
138 Layout
Submit Documentation Feedback
Product Folder Links: TLK10031
Copyright © 2015, Texas Instruments Incorporated