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LMK04832W/EM Datasheet(PDF) 92 Page - Texas Instruments |
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LMK04832W/EM Datasheet(HTML) 92 Page - Texas Instruments |
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92 / 99 page ![]() 11.2 Layout Example CLKouts/OSCouts - Differential signals should be routed tightly coupled to minimize PCB crosstalk. For LVPECL/LCPECL/CML place components resistors close to IC. OSCout shares pins with CLKin2 and is programmable for input or output. For CLKout Vccs in JESD204B application, Place the ferrite beads then a 1-µF capacitor. The 1-µF capacitor supports low-frequency SYSREF switching/turning on. For CLKout Vccs in traditional applications, place a ferrite bead on top layer close to pins to choke high-frequency noise from the via. CLKin and OSCin - If differential input (preferred) route traces tightly coupled. If single ended, have at least 3-trace width (of CLKin/ OSCin trace) separation from other RF traces. Place terminations close to IC. CLKin2 and OSCout share pins and are programmable for input or output. Charge pump output - shorter traces are better. Place all resistors and caps close to the IC. Figure 11-1. Top Layer LMK04832-SP SNAS698A – MARCH 2017 – REVISED AUGUST 2020 www.ti.com 92 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated Product Folder Links: LMK04832-SP |
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