LMX2354SLDX

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2354SLDX is a high-performance frequency synthesizer IC manufactured by National Semiconductor, now part of Texas Instruments. It belongs to the PLLatinum series and features a dual architecture combining fractional N RF and integer N IF sections. Designed for low power consumption, it operates within a supply voltage range of 2.7V to 5.5V. The device is housed in a compact 24-WFLGA package measuring 4.5x3.5 mm. It functions as a single-channel frequency synthesizer suitable for demanding RF applications requiring precise frequency generation.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual synthesis architecture integrating fractional N for RF and integer N for IF stages
• Low power operation optimized for portable and battery-powered systems
• Programmable configuration capabilities for flexible frequency planning
• Compact surface-mount packaging designed for space-constrained PCB layouts

Clock Generators, PLLs, Frequency Synthesizers Applications

• Wireless communication base stations
• Portable radio equipment
• RF test and measurement instruments
• Satellite communication terminals

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor assets are managed by Texas Instruments. Confirm the specific package variant matches the 24-WFLGA specification. Ensure compatibility with existing system voltage requirements ranging from 2.7V to 5.5V before integration. Cross-reference datasheet revisions to confirm pinout consistency.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a dual-loop synthesizer is required to separate RF and IF frequencies within a single chip. The low power profile makes it suitable for applications where energy efficiency is critical. Consider the 24-pin package constraints during layout design. Verify that the programmable interface meets the control logic requirements of the host system.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device is part of the PLLatinum family of frequency synthesizers. It succeeds earlier generations by offering improved phase noise performance and lower power consumption. The transition from National Semiconductor to Texas Instruments ensures continued support and availability. The LMX2354 series provides a robust solution for complex RF front-end designs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Consult official substitution guides for equivalent devices within the LMX23xx series. Verify electrical parameters and pin compatibility before replacing the component. No direct substitute part numbers are confirmed in public documentation.