Description:The MK5811C device generates a low EMI output clock from a clock or crystal input. The device is designed to dither a high emissions clock to lower EMI in consumer applications. Using IDT's proprietary mix of analog and digital Phase Locked Loop (PLL) technology, the device spreads the frequency spectrum of the output and reduces the frequency amplitude peaks by several dB. The MK5811C offers both centered and down spread from a high-speed clock input. For different multiplier configurations, use the MK581
Renesas provides a recommended PCB layout guide in their application note (AN1818) for the MK5811CMLFT, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
To ensure reliable operation in high-temperature environments, it's essential to follow the recommended thermal design guidelines, use a suitable thermal interface material, and consider derating the device's power dissipation according to the temperature derating curve provided in the datasheet.
Renesas recommends using X5R or X7R ceramic capacitors with a voltage rating of 10V or higher for input and output capacitors. The recommended capacitance values are 10uF for input and 22uF for output, but these values may need to be adjusted based on the specific application requirements.
To troubleshoot issues with the enable pin (EN), ensure that the pin is properly connected to a logic-level signal, and verify that the signal is within the recommended voltage range (0.8V to 2.4V). Also, check for any noise or ringing on the EN pin, as this can cause the device to malfunction.
Renesas recommends using a reflow soldering process with a peak temperature of 260°C (500°F) for a maximum of 30 seconds. Hand soldering is not recommended due to the device's small size and lead-free package.
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MK5811CMLFT Overview
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