LMX2541SQX2690E/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2541SQX2690E/NOPB is a PLLatinum frequency synthesizer featuring an integrated VCO, manufactured by Texas Instruments. It operates within a supply voltage range of 3.15 V to 3.45 V and supports input frequencies from 5 MHz to 6 GHz. The device generates output frequencies between 32 MHz and 4 GHz. Designed for surface-mount installation, it utilizes a 36-WQFN package with exposed pad. The component functions as a single-circuit PLL frequency synthesizer suitable for wireless and RF communication applications, operating reliably across temperatures from -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates an ultra-low noise VCO with external bypass option
• Supports high-speed SPI digital interface for configuration
• Features programmable charge pump and reference divider

Clock Generators, PLLs, Frequency Synthesizers Applications

• Wireless infrastructure base stations
• Point-to-point microwave radios
• Test and measurement equipment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the complete part number including suffixes such as SQX2690E/NOPB against official Texas Instruments documentation to ensure correct pinout and electrical characteristics. Confirm that the ordering information matches the specific variant required for your design, as suffixes may indicate packaging or temperature grade variations without altering core functionality unless explicitly stated in the datasheet.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing systems requiring low phase noise performance in the microwave frequency range. Ensure the PCB layout accommodates the 36-WQFN package dimensions and provides adequate thermal dissipation through the exposed pad. Verify that the system power supply meets the specified 3.15 V to 3.45 V range to maintain optimal synthesizer operation and jitter performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the LMX2541 family of PLLatinum frequency synthesizers. Other variants in the series, such as LMX2541SQ2060E/NOPB, share similar architectural features but may differ in factory programming or specific tuning ranges. The family is designed for high-performance RF applications requiring precise frequency generation and low spurious content.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes include other LMX2541 variants like LMX2541SQ2060E/NOPB. Cross-referencing with National Semiconductor original specifications may be necessary if sourcing from legacy channels. Ensure any replacement maintains the same WQFN-36 package and electrical parameters.