LMX2541SQ3740E/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2541SQ3740E/NOPB is a PLLatinum frequency synthesizer from Texas Instruments, designed for ultra-low noise performance in wireless and RF applications. It features an integrated VCO with a frequency range of 3680 MHz to 4240 MHz. The device supports input frequencies from 5 MHz to 6 GHz and generates output frequencies between 32 MHz and 4 GHz. It operates on a supply voltage of 3.15 V to 3.45 V with a typical current consumption of 120 mA. The component is housed in a 36-WQFN package and functions within a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Ultra-low phase noise performance suitable for high-frequency communication systems
• Integrated Voltage Controlled Oscillator (VCO) with external bypass option
• Programmable fractional and integer-N synthesis capabilities
• Supports uWire serial interface for configuration

Clock Generators, PLLs, Frequency Synthesizers Applications

• Point-to-point microwave radio links
• Software-defined radio (SDR) platforms
• Test and measurement equipment local oscillators
• Satellite communication ground stations

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix '3740' against official Texas Instruments documentation to confirm the exact VCO frequency band, as suffixes denote internal VCO tuning ranges. Ensure compatibility with the 36-WQFN footprint during procurement. Confirm RoHS compliance status via the manufacturer's latest datasheet revision before ordering.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when operation in the 3.68 GHz to 4.24 GHz range is required. Compare phase noise specifications at relevant offset frequencies against system requirements. Consider the 120 mA power consumption relative to thermal management constraints in the WQFN-36 package. Verify that the 6 GHz maximum input frequency meets the reference clock requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LMX2541 family of PLLatinum frequency synthesizers. It shares core architecture with variants like LMX2541SQ3030E and LMX2541SQ2060E, differing primarily in the integrated VCO center frequency and tuning range defined by the numerical suffix. All variants utilize the same 36-WQFN package and control interface.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes include other LMX2541 variants such as LMX2541SQ3030E/NOPB or LMX2541SQX2690E/NOPB if the application allows for different VCO frequency bands. Cross-reference pinouts and register maps to ensure software compatibility when swapping between suffixes.