Description:The 9ZML1252E is a second generation 2-input/12-output differential mux for Intel Purley and newer platforms. It exceeds the demanding DB1200ZL performance specifications and is backwards compatible to the 9ZML1232B. It utilizes Low Power HCSL-compatible outputs to reduce power consumption and termination resistors. It is suitable for PCI-Express Gen1-4 or QPI/UPI applications, and provides 2 configurable low-drift I2O settings, one for each input channel, to allow I2O tuning for various topologies.
Renesas provides a recommended PCB layout guide in their application note (R01AN4461EJ0100) which includes thermal design considerations, such as thermal vias, copper pours, and component placement.
Renesas recommends following their thermal design guidelines, using a heat sink if necessary, and ensuring proper airflow around the device. Additionally, the device's thermal protection feature can be enabled to prevent overheating.
Renesas recommends using X7R or X5R ceramic capacitors with a voltage rating of 10V or higher for input and output capacitors. The capacitance value should be between 4.7uF to 10uF, and the ESR should be less than 100mΩ.
Renesas recommends checking the power-good signal timing, ensuring the input voltage is within the specified range, and verifying the output voltage is stable. Also, check for any short circuits or overcurrent conditions that may be affecting the power-good signal.
Renesas recommends following the J-STD-020D.1 standard for soldering and rework of the device. Additionally, they provide specific guidelines for reflow soldering, wave soldering, and manual soldering in their application note (R01AN4461EJ0100).
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9ZML1252EKILF Overview
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