LMX2594RHAR

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2594RHAR is a wideband PLLatinum RF synthesizer manufactured by Texas Instruments. It operates on a single 3.3V supply with an integrated LDO, eliminating the need for external low-noise regulators. The device generates output frequencies from 10 MHz to 15 GHz without internal multipliers or harmonic filters. Key electrical parameters include a maximum input frequency of 1.4 GHz and a phase detector frequency up to 400 MHz in integer mode. It features a 32-bit fractional-N divider and supports JESD204B SYSREF generation. The component is housed in a 40-pin VQFN package and functions within a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any frequency between 10 MHz and 15 GHz without using internal multipliers or harmonic filters
• Supports phase synchronization across multiple devices with fine delay adjustment for board trace differences
• Includes programmable ramp generator for FMCW applications with fast VCO calibration capabilities
• Features a high-speed N-divider without a prescaler to significantly reduce spurious amplitude and count

Clock Generators, PLLs, Frequency Synthesizers Applications

• Clocking for high-speed data converters supporting JESD204B standards
• FMCW radar systems requiring linear chirp pulse generation
• 5G and millimeter-wave wireless infrastructure equipment
• Phased array antenna beamforming systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the suffix RHAR indicates the tape-and-reel packaging format when ordering. Confirm the specific revision level matches the design requirements. Ensure the procurement channel provides genuine components from authorized sources. Check for moisture sensitivity labeling prior to soldering. Validate that the order quantity aligns with the manufacturer's standard reel specifications.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a broadband synthesizer covering up to 15 GHz is required without harmonic filtering. Consider the integrated LDO feature if minimizing external passive components is a priority. Evaluate the 32-bit fractional-N capability for applications demanding precise frequency resolution. Verify compatibility with the system's reference clock input voltage levels and interface requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LMX2594 family of wideband RF synthesizers. The RHAR suffix specifically denotes the reel packaging variant, distinct from cut-tape options like RHAT. It shares core functional specifications with other variants in the series but differs in shipping configuration. The device is designed to replace older synthesizer solutions requiring external multipliers and complex filtering stages.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

LMX2594RHAT serves as a direct alternative with identical electrical characteristics but utilizes cut-tape packaging instead of reels. Both parts share the same pinout and functionality. Selection depends primarily on manufacturing assembly preferences regarding bulk versus individual component handling.