LMK04031BISQE/NOPB

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMK04031BISQE/NOPB is a low-noise clock jitter cleaner from the Texas Instruments LMK04000 family, housed in a 48-pin WQFN package. It utilizes a cascaded PLLatinum architecture with dual redundant inputs and an integrated low-noise VCO. The device supports input frequencies up to 400 MHz and generates outputs up to 1.57 GHz. Key electrical parameters include a supply voltage range of 3.15 V to 3.45 V, typical operating current of 335 mA, and RMS jitter performance of 150 fs (12 kHz–20 MHz). It features five dedicated channel divider blocks and offers LVDS, LVPECL, and LVCMOS output options.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Cascaded PLLatinum architecture for sub-200 femtosecond RMS jitter cleaning
• Dual redundant reference clock inputs with loss-of-signal detection
• Integrated low-noise crystal oscillator circuit and high-performance VCO
• Five programmable channel dividers with phase synchronization and delay capabilities

Clock Generators, PLLs, Frequency Synthesizers Applications

• Data converter clocking
• Wireless infrastructure systems
• Networking equipment including SONET/SDH and DSLAM
• Medical instrumentation
• Test and measurement devices

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'E' against the manufacturer's documentation to confirm package marking or tape-and-reel specifications. Ensure the component matches the RoHS compliance status indicated in the official datasheet. Confirm that the 48-pin WQFN footprint aligns with the design layout requirements before finalizing procurement orders.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when ultra-low jitter performance below 200 fs is required for high-speed data converters. The LMK04031 variant specifically provides two LVDS and two LVPECL/LVCMOS outputs per channel pair. Verify that the system requires the 1430 MHz to 1570 MHz VCO tuning range characteristic of the 'x1' series within the LMK04000 family.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the LMK04000 family of precision clock conditioners manufactured by Texas Instruments. The family includes variants such as the LMK04000, LMK04001, and LMK04033, which share the same 48-pin WQFN package and cascaded PLLatinum architecture but differ in output configurations and VCO frequency ranges.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

LMK04031BISQ/NOPB