Description:The MK1714-01 is a low cost, high performance clock synthesizer with selectable multipliers and percentages of spread spectrum designed to generate high frequency clocks with low EMI. Using analog/digital Phase Locked Loop (PLL) techniques, the device accepts an inexpensive, fundamental mode, parallel resonant crystal or clock input to produce a spread or dithered output. This reduces the EMI amplitude peaks at the odd harmonics by several dB. The OE pin places both outputs into a high impedance state for b
Renesas provides a recommended PCB layout guide in their application note (AN1814) for the MK1714-01RLF, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance.
To ensure reliable operation in high-temperature environments, it's essential to follow the recommended operating conditions, use a suitable thermal interface material, and implement a robust thermal management system. Additionally, consider using a thermistor or temperature sensor to monitor the device temperature and implement thermal protection mechanisms.
The input capacitor (CIN) should be a low-ESR ceramic capacitor with a value between 1uF to 10uF, and the output capacitor (COUT) should be a low-ESR ceramic capacitor with a value between 10uF to 22uF. The capacitor selection should be based on the specific application requirements and operating conditions.
To optimize the layout for EMI and noise reduction, follow the recommended PCB layout guidelines, use a solid ground plane, and implement a shielded layout for the switching node. Additionally, consider using EMI filters, such as ferrite beads or common-mode chokes, to reduce noise and EMI emissions.
The bootstrap capacitor (CBST) should be a ceramic capacitor with a value between 10nF to 100nF, and the bootstrap resistor (RBST) should be a 1kΩ to 10kΩ resistor. The bootstrap capacitor and resistor values should be selected based on the specific application requirements and operating conditions.
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MK1714-01RLF Overview
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