LTC6952IUKG#TRPBF

Clock Generators, PLLs, Frequency Synthesizers Overview

The LTC6952IUKG#TRPBF is an ultralow jitter, 4.5GHz PLL with 11 outputs and JESD204B/C support. It features a reference divider, phase-frequency detector, ultralow noise charge pump, and integer feedback divider. The device provides eleven individually programmable frequency dividers and output drivers, supporting up to five JESD204B/C subclass 1 device clock/SYSREF pairs plus one general-purpose output. Outputs can be synchronized using EZSync or ParallelSync protocols. Electrical characteristics include a reference input frequency up to 500MHz, VCO frequency range up to 4500MHz, and additive output jitter of less than 6fs RMS (12kHz to 20MHz integration bandwidth).

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Ultralow jitter performance with additive output jitter < 6fs RMS (12kHz to 20MHz) and –229dBc/Hz normalized in-band phase noise floor.
• Eleven independent low-noise CML outputs with individually programmable frequency dividers, coarse digital delays, and fine analog time delays.
• Supports JESD204B/C Subclass 1 SYSREF signal generation and flexible output configurations for device clocks or general-purpose signals.
• Enables multi-chip synchronization via EZSync and ParallelSync protocols for precise phase alignment across multiple devices.

Clock Generators, PLLs, Frequency Synthesizers Applications

• JESD204B/C, Subclass 1 SYSREF Signal Generation
• High Performance Data Converter Clocking
• Wireless Infrastructure
• Test and Measurement

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the I variant meets the required operating junction temperature range of –40°C to 125°C for the intended application environment. Ensure compatibility with the 52-lead QFN package dimensions during PCB layout planning.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the LTC6952IUKG#TRPBF for applications requiring high-performance clock distribution with minimal added jitter. Consider the 52-lead QFN package constraints and thermal requirements, as the exposed pad must be soldered to the ground plane. Evaluate the need for EZSync or ParallelSync if system architecture involves multiple synchronized clock generators.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the LTC6952 family of clock synthesizers designed for high-speed data converter interfaces. It serves as a critical timing element in systems utilizing JESD204B/C standards, providing the necessary clock and SYSREF signals with precise phase control capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence regarding pinout, electrical specifications, and software configuration tools before considering alternative components.