LMX2434TM/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2434TM/NOPB is a dual high-frequency synthesizer from the PLLatinum family, designed for RF personal communications. It integrates two independent phase-locked loops: an RF synthesizer operating up to 5 GHz and an IF synthesizer up to 2.5 GHz. The device supports a supply voltage range of 2.25 V to 2.75 V with typical current consumption of 4.6 mA for the RF section and 2.4 mA for the IF section. It features programmable charge-pump currents (1 mA or 4 mA), Fastlock circuitry with integrated time-out counters, and a 1.8-V MICROWIRE serial interface.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual synthesizer architecture with dedicated RF and IF PLLs
• Fastlock capability with integrated time-out counters for rapid frequency changes
• Programmable charge-pump output levels for loop filter optimization
• Digital filtered and analog lock-detect outputs

Clock Generators, PLLs, Frequency Synthesizers Applications

• Mobile handsets
• Cordless handsets
• Wireless data terminals
• Cable TV tuners

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix TM against the manufacturer's official orderable addendum to confirm package type and availability status. Ensure the component meets RoHS compliance requirements for the intended deployment environment. Cross-reference the datasheet revision date to confirm technical specifications match the production batch.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when applications require dual-synthesizer functionality within a single package for RF and IF generation. The 5 GHz RF limit suits specific wireless standards. Evaluate power constraints against the 4.6 mA RF and 2.4 mA IF consumption figures. Confirm compatibility with 1.8-V logic interfaces for system control.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the LMX243x series, which includes the LMX2430 and LMX2433 variants. These devices share the same PLLatinum technology and pinout but differ in maximum operating frequencies. The LMX2434 specifically targets higher frequency ranges compared to its siblings, offering 5 GHz RF and 2.5 GHz IF capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

LMX2430TM/NOPB and LMX2433TM/NOPB are functionally similar within the same family but offer lower maximum frequency limits. Verify that the reduced RF/IF bandwidth of these alternatives meets the specific application requirements before substitution.