**The LTC6955IUKG#PBF: A High-Performance Low Phase Noise Clock Distribution IC**

In the world of high-speed data acquisition, wireless communication, and advanced radar systems, the purity and stability of the clock signal are paramount. **The LTC6955IUKG#PBF from Analog Devices stands as a premier solution, engineered specifically to address the critical need for ultra-low phase noise and high-performance clock distribution.** This integrated circuit (IC) is more than just a clock buffer; it is a complete clock distribution system designed to preserve signal integrity in the most demanding applications.

At its core, the LTC6955 is a low additive phase noise, multi-output clock distribution IC. It accepts a single reference clock input and generates up to ten precisely synchronized output signals. **A key differentiator of the LTC6955 is its exceptional ability to minimize additive jitter, boasting figures as low as 15fs RMS** (integrated from 12kHz to 20MHz), which is crucial for maintaining the overall system's signal-to-noise ratio (SNR) and error vector magnitude (EVM) performance. This makes it an ideal choice for driving the sampling clocks of high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), where any introduced jitter directly degrades system performance.

The device offers unparalleled flexibility with its ten outputs, which can be individually configured as either LVPECL, LVDS, or CMOS logic levels. This programmability allows a single device to interface with a variety of components (FPGAs, ASICs, data converters) within a system, simplifying design and reducing board space. Furthermore, **the LTC6955 incorporates internal dividers and delays, providing system designers with precise control over output frequency and phase alignment.** This feature is indispensable for synchronizing multiple devices across a large board or even across different cards in a chassis.

**Built for resilience in noisy environments, the LTC6955 exhibits excellent power supply rejection ratio (PSRR) and cross-talk rejection.** Its design ensures that noise on the power rails or between output channels has a negligible impact on the output clock's purity. The IC is available in a compact 64-lead (9mm x 9mm) QFN package, the LTC6955IUKG#PBF, and is specified over the industrial temperature range (-40°C to 85°C), guaranteeing reliable operation in a wide array of conditions.

ICGOOODFIND: The LTC6955IUKG#PBF is a benchmark in precision clock management. Its industry-leading low phase noise, high integration with ten configurable outputs, and robust feature set make it an indispensable component for engineers designing next-generation test and measurement equipment, aerospace systems, and high-performance telecommunication infrastructure.

**Keywords:**

1. **Low Phase Noise**

2. **Clock Distribution**

3. **Additive Jitter**

4. **LVPECL/LVDS/CMOS**

5. **Signal Integrity**