LMX2492QRTWTQ1

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2492QRTWTQ1 is a fractional-N phase-locked loop (PLL) manufactured by Texas Instruments, designed for high-performance frequency synthesis. It operates with an input frequency range of 10 MHz to 1.2 GHz and generates output frequencies from 500 MHz to 14 GHz. The device functions on a single supply voltage between 3.15 V and 3.45 V, drawing approximately 60 mA during operation. It is housed in a WQFN-24 surface-mount package and supports industrial temperatures from -40°C to +125°C. The component holds AEC-Q100 qualification for automotive applications.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated ramp and chirp generation capabilities for FMCW radar applications
• Fractional-N architecture supporting wideband frequency synthesis up to 14 GHz
• AEC-Q100 qualified for automotive reliability standards

Clock Generators, PLLs, Frequency Synthesizers Applications

• Automotive radar systems requiring linear frequency modulation
• Frequency agile communication transceivers
• Test and measurement equipment needing low noise synthesis

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix QRTWTQ1 against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the WQFN-24 form factor. Confirm that the AEC-Q100 grade meets the target application's environmental requirements before finalizing orders.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a wide output frequency range extending to 14 GHz is required alongside integrated chirp generation. Compare against the LMX2491 if lower maximum output frequencies suffice, as it may offer different thermal or cost characteristics. Verify that the 1.2 GHz maximum input frequency aligns with the reference clock source available in the design.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LMX2492 family of low-noise PLLs. It shares architectural similarities with the LMX2491 but offers extended output frequency capabilities. The 'Q1' designation indicates automotive qualification, while 'RTWT' specifies the reel packaging format. It serves as a direct upgrade path for designs previously using standard commercial-grade synthesizers requiring higher performance.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The LMX2492QRTWRQ1 is a documented alternative variant within the same product line. Verify pinout and electrical parameter equivalence before substitution. No other public substitute part numbers are confirmed.