LMX2515LQ1321

Overview

The LMX2515LQ1321 is a PLLatinum frequency synthesizer system manufactured by National Semiconductor. It operates at a center frequency of 1321MHz and features an integrated Phase-Locked Loop (PLL) and Voltage-Controlled Oscillator (VCO). The device is designed for RF applications requiring precise frequency synthesis. It is housed in a 28-WQFN package with dimensions of 5x5mm, featuring an exposed pad for thermal management. The component is classified as a PDC RF IC and is currently in active production status.

Feature Summary

• Integrates both PLL and VCO functions within a single compact package
• Utilizes the PLLatinum architecture for high-performance frequency synthesis
• Designed specifically for PDC RF IC applications

Applications

• RF frequency synthesis systems
• Wireless communication infrastructure
• Test and measurement equipment

Procurement Notes

Verify component authenticity through authorized National Semiconductor distributors or certified suppliers. Confirm that the received part matches the LMX2515LQ1321 designation and 28-WQFN packaging. Check datasheet revisions to ensure compatibility with current design requirements. Validate RoHS compliance status if required by specific regulatory standards, noting potential variations based on manufacturing date.

Selection Notes

Select this component when a fixed 1321MHz output frequency is required without external VCO integration. The integrated PLL and VCO design simplifies board layout compared to discrete solutions. Ensure the 28-WQFN footprint fits the PCB constraints. Consider the PDC application context to verify suitability for the target RF environment and signal integrity needs.

Part Context

This part belongs to the PLLatinum series from National Semiconductor, which focuses on advanced frequency synthesis solutions. The LMX2515 variant represents a specific configuration optimized for the 1321MHz band. It complements other devices in the family by providing a complete synthesizer solution in a small form factor, reducing component count in RF front-end designs.

Replacement Considerations

Consult official National Semiconductor documentation for direct substitutes. Verify pin-to-pin compatibility and electrical parameter equivalence before swapping. Cross-reference with similar PLLatinum series parts for functional alternatives if supply constraints exist.