MX852EB0027

Overview

The MX852EB0027 is an ultra-low jitter XTAL oscillator with fanout buffers from the ClockWorks® FUSION family. It integrates a quartz crystal, synthesizer, and five HCSL output buffers within a single 38-pin 5mm x 7mm LGA package. The device operates on a 2.5V or 3.3V supply and generates five 100MHz differential HCSL outputs. Key electrical parameters include ±50ppm total frequency stability, 20ms typical start-up time, and RMS phase noise of 254fs (12kHz-20MHz) and 118fs (1.5MHz-20MHz).

Feature Summary

• Integrates quartz crystal, PLL synthesizer, and five 100MHz HCSL fanout buffers in one package.
• Ultra-low phase noise performance: 254fs typical RMS at 12kHz-20MHz integration range.
• ±50ppm total frequency stability over temperature.
• Independent Output Enable (OE1, OE2) controls for Bank 1 and Bank 2 outputs.

Applications

• PCI-Express systems
• Storage subsystems

Procurement Notes

Verify the specific ordering suffix to confirm shipping format. The standard part number MX852EB0027 ships in tubes, while the variant MX852EB0027 TR ships in tape and reel. Confirm package dimensions and pin configuration match the design requirements before procurement.

Selection Notes

Select this component when a compact solution integrating reference and distribution is required. Ensure the PCB layout accommodates the 38-pin 5mm x 7mm LGA package. Verify that the power supply filtering meets the recommended impedance values for VDDA and VDD pins to maintain specified jitter performance.

Part Context

This device belongs to the ClockWorks® FUSION family, designed to consolidate clock generation and distribution functions. It replaces discrete solutions involving separate crystals, oscillators, and buffer amplifiers, thereby reducing board space and assembly complexity for high-speed digital interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative devices based on package compatibility, output logic levels, and jitter specifications if direct replacement is necessary.

FAQ

What is the operating voltage range for the MX852EB0027?

The device supports both 2.5V and 3.3V operating voltages, with a specified range of 2.375V to 3.465V.

How are the outputs controlled?

Outputs are divided into two banks. OE1 controls Bank 1 (Q1-Q3), and OE2 controls Bank 2 (Q4-Q5). Setting these inputs low disables the respective outputs to tri-state.

What is the typical start-up time?

The typical start-up time for the device is 20ms.