LMX2531LQX1312E/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2531LQX1312E/NOPB is a high-performance frequency synthesizer system from Texas Instruments, designed for wireless and RF communication applications. It operates within an output frequency range of 553 MHz to 3.132 GHz. The device functions on a supply voltage between 2.8 V and 3.2 V, with a typical operating current of 32 mA. It is housed in a 36-WQFN package with an exposed pad, suitable for surface mount assembly. The component supports an extended industrial temperature range from -40°C to +85°C and complies with AEC-Q100 qualification standards.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates a Voltage-Controlled Oscillator (VCO) directly into the silicon die to minimize external component count and reduce overall solution size.
• Features a fully integrated phase-locked loop (PLL) architecture that includes a programmable reference divider, dual feedback dividers, and a low-noise charge pump.
• Supports flexible clocking configurations with multiple input and output options, including CMOS outputs for direct interfacing with downstream digital components.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Wireless local area network (WLAN) systems requiring precise frequency synthesis.
• Point-to-point microwave radio links for broadband data transmission.
• Software-defined radio (SDR) platforms needing agile frequency generation.
• Test and measurement equipment requiring stable signal sources.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'X' against official Texas Instruments documentation to confirm it denotes a valid manufacturing or packaging variant rather than a typo. Ensure the ordering part number matches the exact tape-and-reel specifications required for automated assembly processes. Cross-reference the date code and lot information to guarantee compliance with RoHS directives and current environmental regulations.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a compact, single-chip solution is required for frequencies up to 3.132 GHz. The integrated VCO simplifies board layout by eliminating external tank circuits. Consider the 36-WQFN package constraints for thermal management and ensure the design accommodates the exposed pad for grounding. Verify that the 32 mA current consumption aligns with the system's power budget constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LMX2531 family of high-performance PLL frequency synthesizers. Variants within this series are distinguished by their internal VCO tuning ranges, indicated by the numeric codes in the part number. These devices share common control interfaces and architectural features but are optimized for different frequency bands to meet specific application requirements.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes include other LMX2531 variants such as LMX2531LQ1146E/NOPB or LMX2531LQ2265E/NOPB, provided their specific VCO frequency ranges cover the target application spectrum. Ensure pin compatibility and register settings remain consistent when migrating between these family members.