LMX2471SLEX

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2471SLEX is a low-power, high-performance delta-sigma fractional-N phase-locked loop (PLL) featuring an auxiliary integer-N PLL. Manufactured by National Semiconductor, this integrated circuit operates with a maximum input frequency of 3.6 GHz and supports output frequencies up to 3.6 GHz. It functions within a supply voltage range of 2.25 V to 2.75 V and is designed for surface mount installation in a 24-UFQFN package. The device supports CMOS inputs and operates across a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates a delta-sigma fractional-N PLL architecture for precise frequency synthesis
• Includes an auxiliary integer-N PLL to enhance performance characteristics
• Designed as a low-power solution for demanding clock and timing applications

Clock Generators, PLLs, Frequency Synthesizers Applications

• Demanding clock generation systems
• Timing synchronization circuits
• MIMO transceiver reference clock coupling

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the manufacturer designation carefully, as the component history involves transitions between National Semiconductor, Luminary Micro, and Texas Instruments. Confirm that the specific suffix SLEX matches the required 24-UFQFN surface-mount package configuration. Ensure compatibility with the intended operating voltage range and temperature specifications before integration into the final design.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a single-chip solution combining both fractional-N and integer-N PLL capabilities is required. It is suitable for designs prioritizing low power consumption alongside high-frequency operation up to 3.6 GHz. Consider the 24-UFQFN package constraints and the specific need for delta-sigma modulation techniques in your frequency synthesis requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the family of PLL frequency synthesizers originally developed by National Semiconductor. The product line has been associated with various corporate entities including Luminary Micro and Texas Instruments following industry acquisitions. The LMX2471 specifically addresses the need for versatile clock generation within a compact footprint, serving as a key component in RF and microwave subsystems.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.