LMX2541SQ2060E/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2541SQ2060E/NOPB is a PLLatinum ultra-low noise frequency synthesizer manufactured by Texas Instruments, formerly National Semiconductor. It features an integrated voltage-controlled oscillator (VCO) and operates within a supply voltage range of 3.15 V to 3.45 V. The device supports input frequencies from 5 MHz to 6 GHz and generates output frequencies between 32 MHz and 4 GHz. Packaged in a 36-WQFN exposed pad format, it functions as a single-circuit RF clock generator with a typical operating current of 120 mA across a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated Voltage-Controlled Oscillator (VCO) for compact design
• Ultra-low phase noise performance suitable for high-frequency applications
• Wide input frequency range up to 6 GHz
• Output frequency synthesis capability from 32 MHz to 4 GHz

Clock Generators, PLLs, Frequency Synthesizers Applications

• Wireless communication base stations
• Test and measurement equipment requiring precise clocking
• High-speed data converter reference clocks

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the manufacturer designation, as the component is currently produced by Texas Instruments following their acquisition of National Semiconductor. Confirm the suffix NOPB indicates lead-free compliance and RoHS adherence. Ensure the SQ grade matches the required industrial temperature specifications (-40°C to +85°C) for the target environment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an integrated VCO solution is preferred over external oscillator designs to minimize board space and component count. The 36-WQFN package requires adequate thermal management due to the 120 mA operating current. Verify that the required output frequency falls within the 32 MHz to 4 GHz range and that the input reference signal is compatible with the 5 MHz to 6 GHz input window.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LMX2541 family of PLLatinum frequency synthesizers. The 'SQ' suffix denotes the industrial temperature grade, while 'NOPB' signifies non-plumb (lead-free) packaging. Although originally associated with National Semiconductor branding, production and datasheet support are managed by Texas Instruments.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements within the same family include variants such as LMX2541SQX2690E/NOPB or LMX2541SQ3030E/NOPB, which share the same core architecture but may differ in factory programming or specific electrical characteristics. Cross-referencing the exact output frequency requirements and pin compatibility is necessary before substitution.