LMX2531LQ1778E/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2531LQ1778E/NOPB is a high-performance frequency synthesizer system from Texas Instruments, belonging to the LMX2531 series. It operates within an output frequency range of 553 MHz to 3.132 GHz and requires a supply voltage between 2.8 V and 3.2 V. The device draws a typical operating current of 32 mA and functions reliably across a temperature range of -40°C to +85°C. It is housed in a compact 36-pin WQFN package with an exposed pad, designed for surface-mount applications in wireless and RF integrated circuits.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated Voltage Controlled Oscillator (VCO) reduces external component count
• High-performance phase-locked loop architecture for precise frequency synthesis
• AEC-Q100 qualified for automotive reliability standards

Clock Generators, PLLs, Frequency Synthesizers Applications

• Wireless communication systems
• RF front-end modules
• Automotive radar and sensing applications

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'LQ1778' against official Texas Instruments documentation to confirm the exact internal divider configuration or band selection associated with this variant. Ensure compatibility with the required output frequency range of 553 MHz to 3.132 GHz for your design. Confirm moisture sensitivity level and reflow soldering profiles prior to assembly.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a fully integrated PLL solution with an on-chip VCO is required for space-constrained designs. The 36-WQFN package offers a small footprint suitable for dense PCB layouts. Consider the 32 mA supply current and 2.8 V to 3.2 V operating voltage range when designing power delivery networks for optimal performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part is a member of the LMX2531 family of high-performance frequency synthesizers. Other variants in the series, such as LMX2531LQ2820E/NOPB and LMX2531LQ1570E-NOPB, share similar electrical characteristics and packaging but differ in specific internal configurations or target frequency bands. The family is widely used in modern RF transceivers.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes within the same family include LMX2531LQ2820E/NOPB and LMX2531LQ1570E-NOPB. Verify that the alternative part number supports the specific frequency division ratios or band requirements intended for the LQ1778 variant before replacing.