Description:The 813N252I-04 is a PLL based synchronous multiplier that is optimized for PDH or SONET to Ethernet clock jitter attenuation and frequency translation. The device contains two internal frequency multiplication stages that are cascaded in series. The first stage is a VCXO PLL that is optimized to provide reference clock jitter attenuation. The second stage is a FemtoClock® NG frequency multiplier that provides the low jitter, high frequency Ethernet output clock that easily meets Gigabit and 10 Gigabit Ethe
Renesas provides a recommended PCB layout guide in their application note (APN) documents, which can be found on their website. The guide includes thermal vias, copper pours, and other layout considerations to ensure optimal thermal performance.
The 813N252BKI-04LF requires a specific power sequencing order to prevent damage or malfunction. Renesas recommends following the power-up and power-down sequences outlined in the datasheet, and using a power sequencing controller or a dedicated power management IC to ensure proper sequencing.
Renesas recommends using decoupling capacitors with values between 0.01 μF to 1 μF, placed as close as possible to the device's power pins. The exact values and placement may vary depending on the specific application and PCB layout.
To ensure EMC compliance, follow Renesas' guidelines for PCB layout, component selection, and shielding. Additionally, consider using EMI filters, ferrite beads, or common-mode chokes to reduce electromagnetic interference.
The 813N252BKI-04LF has a maximum junction temperature of 150°C. To ensure reliable operation, consider thermal design factors such as heat sink selection, thermal interface materials, and airflow management. Renesas provides thermal design guidelines in their application notes.
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813N252BKI-04LF Overview
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