Texas Instruments provides a recommended PCB layout in the application note SLUA433, which includes guidelines for component placement, routing, and grounding to minimize noise and ensure optimal performance.
The loop filter component values can be calculated using the PLL1700EG Loop Filter Calculator tool provided by Texas Instruments. The tool takes into account the desired loop bandwidth, phase margin, and other parameters to recommend optimal component values.
While the datasheet specifies a maximum input frequency of 100 MHz, the PLL1700EG can actually handle input frequencies up to 150 MHz with some degradation in performance. However, it's recommended to consult with Texas Instruments support for specific guidance on using the device beyond the specified maximum input frequency.
To troubleshoot PLL lock issues, check the input signal quality, ensure proper power supply decoupling, and verify that the loop filter components are correctly valued and placed. Also, use a spectrum analyzer to check for spurious signals or noise that may be affecting PLL lock. Consult the PLL1700EG troubleshooting guide (SLUA435) for more detailed guidance.
While the PLL1700EG is not specifically designed for radiation-hardened or high-reliability applications, Texas Instruments offers other PLL devices that are qualified for such use cases. Consult with Texas Instruments support to determine the best device for your specific requirements.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
