LMX2323TMX

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2323TMX is a PLLatinum 2.0 GHz frequency synthesizer designed for RF personal communications applications. Manufactured by National Semiconductor, now part of Texas Instruments, this component integrates a low-noise phase-locked loop (PLL) and voltage-controlled oscillator (VCO) to generate stable output frequencies. The device supports high-performance modulation schemes required in wireless systems. It operates within a specific supply voltage range and features integrated charge pumps and reference dividers. The TMX suffix indicates the tape-and-reel packaging format for automated assembly processes.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates a low-noise PLL and VCO for compact RF design
• Supports high-speed modulation for personal communication systems
• Includes integrated charge pump and reference divider circuitry

Clock Generators, PLLs, Frequency Synthesizers Applications

• RF personal communications transceivers
• Wireless local loop equipment
• Mobile phone base stations

Clock Generators, PLLs, Frequency Synthesizers Part Context

The LMX2323 belongs to the PLLatinum family of frequency synthesizers from National Semiconductor. This series was engineered to provide high spectral purity and low phase noise for demanding RF applications. The LMX2323 specifically targets the 2.0 GHz band, offering a solution for designers needing integrated synthesis without external discrete components. The device represents a transition period where National Semiconductor designs were maintained under Texas Instruments after acquisition.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include the LMX2322 and LMX2324 from the same PLLatinum family. Designers should verify pin compatibility and electrical specifications against current Texas Instruments datasheets, as legacy National Semiconductor documentation may not reflect updated manufacturing revisions or compliance standards.