LMX2485ESQ/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2485ESQ/NOPB is a dual-phase-locked loop (PLL) frequency synthesizer manufactured by Texas Instruments. It operates within an output frequency range of 50 MHz to 3 GHz, supporting input frequencies from 50 MHz up to 3 GHz. The device utilizes silicon technology and functions on a power supply voltage between 2.5 V and 3.6 V, with a typical operating current of 3.3 mA. Designed for surface-mount installation, it is housed in a WQFN-24 package. The component supports an industrial temperature range from -40°C to +85°C and includes humidity sensitivity features.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual PLL architecture designed for RF personal communication applications
• Delta-sigma modulation for fractional-N frequency synthesis
• Low-power operation suitable for portable devices

Clock Generators, PLLs, Frequency Synthesizers Applications

• RF personal communication systems
• Wireless infrastructure equipment
• Frequency synthesis in mobile handsets

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure compatibility with design requirements. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly. Check for RoHS compliance documentation as indicated in manufacturer specifications. Ensure ordering quantities align with available packaging options such as cut tape or reel formats.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when dual independent frequency synthesis is required within the 3 GHz limit. Consider the WQFN-24 package constraints for PCB layout. Evaluate power consumption at 3.3 mA against system battery life requirements. Verify that the 50 MHz to 3 GHz output range meets the target application's spectral needs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LMX2485E series of low-power delta-sigma PLLs. It shares the WQFN-24 footprint with related models like the LMX2487, though frequency ranges differ. The NOPB suffix indicates lead-free and RoHS-compliant construction. It serves as a specialized solution for compact RF front-end designs requiring multiple synthesizers.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes include other members of the LMX248x family, such as the LMX2487ESQ/NOPB, provided the higher frequency range of the latter does not conflict with design constraints. Verify pin-to-pin compatibility and electrical parameter overlaps before substitution.