Description:The 87002-02 is a highly versatile 1:2 Differential-to- LVCMOS/LVTTL Clock Generator. The 87002-02 has a differential clock input. The CLK, nCLK pair can accept most standard differential input levels. Internal bias on the nCLK input allows the CLK input to accept LVCMOS/LVTTL. The 87002-02 has a fully integrated PLL and can be configured as zero delay buffer, multiplier or divider and has an input and output frequency range of 15.625MHz to 250MHz. The reference divider, feedback divider and output divider
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 87002AG-02LFT has an internal overcurrent protection feature, but it's recommended to add external overcurrent protection circuitry to ensure reliable operation. A simple solution is to use a current sense resistor and a comparator to detect overcurrent conditions and trigger a shutdown or warning signal.
The recommended input capacitor value is typically in the range of 10uF to 22uF, with an X5R or X7R dielectric type. The capacitor should be placed as close as possible to the VIN pin to minimize noise and ensure stable operation.
To ensure EMC compliance, follow Renesas' guidelines for PCB layout, component selection, and shielding. Additionally, consider using EMI filters, ferrite beads, and shielding cans to reduce electromagnetic radiation and susceptibility.
The maximum operating temperature range for the 87002AG-02LFT is -40°C to +125°C, but it's recommended to derate the device's performance and reliability at temperatures above 85°C.
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87002AG-02LFT Overview
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