Description:The 9DBL0452 4-output zero-delay/fanout buffer is a 3.3V member of Renesas' full-featured PCIe family. The 9DBL0452 supports PCIe Gen 1 through Gen 6 and both Common and Independent Reference Clock architectures.For information regarding evaluation boards and material, please contact your local sales representative.
Renesas provides a recommended PCB layout guide in their application notes (e.g., AN9834) and design guides (e.g., DL0044). It's essential to follow these guidelines to ensure optimal performance, minimize noise, and reduce EMI.
The 9DBL0452CKILF has a thermal pad on the bottom, which should be connected to a thermal plane on the PCB. Ensure good thermal conductivity by using a thermal interface material (TIM) and a heat sink if necessary. Follow Renesas' thermal design guidelines (e.g., AN9835) for more information.
The input clock signal should be a differential clock signal with a frequency range of 25 MHz to 100 MHz. The clock signal should have a peak-to-peak voltage of 1.8 V and a common-mode voltage of 0.9 V. Additionally, the clock signal should be AC-coupled to the device.
The 9DBL0452CKILF has a programmable PLL that allows for output frequency configuration. This can be done through the device's register settings, which are described in the datasheet. Renesas also provides a configuration tool (e.g., ClockGen) to simplify the process.
The 9DBL0452CKILF requires a specific power sequencing to ensure proper operation. The VCC core voltage should be applied before the VCCIO voltage. Additionally, the device should be powered up in a specific sequence, as described in the datasheet.
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9DBL0452CKILF Overview
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