LMX2522LQX1635

Overview

The LMX2522LQX1635 is a dual frequency synthesizer with an integrated voltage-controlled oscillator (VCO) designed for high-frequency applications. It operates within the CDMA and PCS RF types, featuring a specific center frequency of 1635MHz. The device integrates both the phase-locked loop (PLL) and VCO components into a single unit. It is housed in a 28-WQFN package with dimensions of 5x5 mm, utilizing a surface-mount installation type. This component belongs to the PLLatinum series from Texas Instruments.

Feature Summary

• Integrates a dual frequency synthesizer with a dedicated VCO for high-frequency operation
• Combines PLL and VCO functions into a single integrated circuit
• Designed specifically for CDMA and PCS wireless communication standards

Applications

• CDMA wireless communication systems
• PCS band signal generation
• High-frequency RF circuit design

Procurement Notes

Verify that the LMX2522LQX1635 is obsolete and no longer manufactured by Texas Instruments. Confirm availability of the direct substitute LMX2522LQ1635/NOPB if procurement is required. Ensure compatibility with existing PCB footprints and design specifications before sourcing alternatives.

Selection Notes

Select this component only if the application requires a fixed 1635MHz frequency synthesis for CDMA or PCS bands. Consider the integrated nature of the PLL and VCO for simplified design. Evaluate the 28-WQFN package constraints for thermal and spatial requirements in the target system.

Part Context

This part is part of the PLLatinum series from Texas Instruments, focusing on integrated frequency synthesis solutions. It serves as a specialized RF IC for cellular communication bands, distinct from general-purpose synthesizers due to its optimized integration for specific wireless standards.

Replacement Considerations

The LMX2522LQ1635/NOPB is listed as a direct substitute. Verify pinout and electrical parameter equivalence before replacement.