LMX2433TMX

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2433TMX 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 3.6 GHz and an IF synthesizer up to 1.7 GHz. The device operates on a single supply voltage ranging from 2.25 V to 2.75 V with typical current consumption of 3.2 mA for the RF section and 2 mA for the IF section. It features programmable charge-pump currents of 1 mA or 4 mA, fastlock circuitry with integrated time-out counters, and a digital filtered lock-detect output. The component utilizes a 20-pin TSSOP package.

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 current levels for loop filter optimization
• Low-voltage 1.8-V MICROWIRE logic interface

Clock Generators, PLLs, Frequency Synthesizers Applications

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

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'TMX' against the manufacturer's orderable addendum to confirm the TSSOP package variant. Ensure the design supports the required 2.25 V to 2.75 V supply range and 1.8 V logic levels. Confirm RoHS compliance status through official documentation before integration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when dual synthesizers are required within the 3.6 GHz and 1.7 GHz ranges. Compare power consumption requirements against the LMX2430 and LMX2434 variants. Verify that the TSSOP package dimensions fit the PCB layout constraints compared to the ULGA option.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the LMX243x family, which includes the LMX2430 and LMX2434. All devices share similar architectures but differ in maximum operating frequencies and power consumption profiles. The LMX2433 specifically targets applications requiring a balance between high-frequency performance and low power usage.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

LMX2430TMX/NOPB offers lower frequency limits (3 GHz RF) with reduced current consumption. LMX2434TMX/NOPB provides higher frequency capabilities (5 GHz RF) at increased power costs. Verify pin compatibility and register settings when substituting.