LMX2572RHAR

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2572RHAR is a low-power wideband RF synthesizer manufactured by Texas Instruments. It operates within an output frequency range of 12.5 MHz to 6.4 GHz and supports input frequencies from 5 MHz to 250 MHz. The device functions on a single 3 V to 3.5 V supply, drawing approximately 70 mA during operation. It is housed in a 40-pin Very Thin Profile Quad Flat No-Lead (VQFN) package measuring 6 mm x 6 mm with a maximum height of 0.9 mm. The component is rated for industrial temperatures between -40°C and +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated fractional-N phase-locked loop architecture designed for wideband synthesis applications
• Supports differential or single-ended reference clock inputs with programmable multipliers
• Features dual differential RF outputs with independent power-down control for each port

Clock Generators, PLLs, Frequency Synthesizers Applications

• Wireless local area network (WLAN) infrastructure equipment
• Point-to-point microwave radio systems
• Software-defined radio platforms
• Test and measurement instrumentation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix RHAR against the manufacturer's official datasheet to confirm the tape-and-reel packaging configuration. Ensure the order quantity aligns with standard reel sizes, typically 2500 units per reel. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement to ensure compatibility with surface-mount assembly processes.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an output frequency up to 6.4 GHz is required. Compare performance against the LMX2572LPRHAT variant if the application only requires frequencies up to 2 GHz, as the LP version may offer different power characteristics. Verify that the system can accommodate the 40-pin VQFN footprint and thermal dissipation requirements associated with the exposed pad design.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the LMX2572 family of wideband RF synthesizers. It serves as a high-performance alternative to older generation PLLs by integrating a wideband charge pump and fractional-N divider. The RHAR designation specifically identifies the reeled packaging format intended for automated surface-mount manufacturing lines.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The LMX2572LPRHAT is a verified lower-frequency variant within the same series. Substitution requires verification that the target application does not exceed 2 GHz. Other members of the LMX25xx family may share pinouts but require careful review of electrical specifications before implementation.