LMX2486SQ/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2486SQ/NOPB is a dual-circuit delta-sigma phase-locked loop (PLL) frequency synthesizer manufactured by Texas Instruments. It operates within an output frequency range of 1 GHz to 4.5 GHz, with input frequencies supported from 5 MHz to 4.5 GHz. The device functions on a silicon technology platform, requiring a supply voltage between 2.5 V and 3.6 V, while consuming a typical operating current of 5.7 mA. Designed for surface-mount applications, it is housed in a WQFN-24 package and maintains reliable operation across a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual-circuit PLL architecture supporting high-frequency synthesis
• Delta-sigma modulation for low-power fractional-N operation
• Wide output frequency coverage from 1 GHz to 4.5 GHz
• Low power consumption of 5.7 mA at nominal voltage

Clock Generators, PLLs, Frequency Synthesizers Applications

• Wireless infrastructure base stations
• Point-to-point microwave radio systems
• Satellite communication terminals

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the manufacturer designation as Texas Instruments, as the component belongs to their portfolio despite historical brand associations. Confirm the suffix 'SQ' indicates automotive-grade qualification and 'NOPB' denotes lead-free packaging. Ensure the WQFN-24 package type matches the target PCB footprint requirements before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an output frequency range up to 4.5 GHz is required. Compare against the LMX2485 series if lower frequency coverage (up to 3 GHz) and reduced current consumption (3.3 mA) are sufficient for the design. Verify that the dual-circuit configuration aligns with system complexity needs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component is part of the LMX2486 family of wireless RF integrated circuits. It serves as a successor or variant within the broader PLLatinum product line, designed to replace older National Semiconductor PLL synthesizers in modern high-frequency applications requiring efficient spectral performance.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The LMX2485SQ/NOPB offers similar functionality but with a reduced frequency range of 500 MHz to 3 GHz and lower power consumption. Designers should evaluate whether the higher frequency capability of the LMX2486 is strictly necessary for the specific application.