LMX2370SLBX

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2370SLBX is a PLLatinum low power frequency synthesizer designed for RF personal communications, manufactured by National Semiconductor. It operates as a fractional-N synthesizer capable of generating frequencies up to 550 MHz. The device integrates a voltage-controlled oscillator (VCO), phase-frequency detector, charge pump, and loop filter components to achieve precise frequency synthesis with low phase noise. It supports multiple output configurations and is optimized for battery-powered applications due to its low power consumption characteristics.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Fractional-N architecture for flexible frequency resolution
• Integrated VCO covering 550 MHz output range
• Low power consumption suitable for portable devices
• Built-in phase-frequency detector and charge pump

Clock Generators, PLLs, Frequency Synthesizers Applications

• RF personal communication systems
• Wireless local loop equipment
• Portable radio transceivers

Clock Generators, PLLs, Frequency Synthesizers Part Context

The LMX2370SLBX belongs to the National Semiconductor PLLatinum family of frequency synthesizers. This series was widely adopted in the late 1990s and early 2000s for cellular and PCS applications before being integrated into Texas Instruments' portfolio following the acquisition of National Semiconductor. The SLBX suffix typically denotes a specific tape-and-reel packaging variant for surface-mount assembly.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include the LMX2306, LMX2316, and LMX2326 from the same PLLatinum family, which share similar architectural features but differ in maximum operating frequencies. Post-acquisition equivalents may be found under Texas Instruments part numbers within the LMX23xx series.