DSA557-0334FL1VAO

Overview

The Microchip Technology DSA557-0334FL1VAO is an automotive-grade MEMS PCI Express clock generator designed for Gen1 through Gen4 specifications. It provides two differential 100MHz outputs in a compact 14-VFQFN package (2.5x3.2mm). The device operates on a supply voltage of 2.25V to 3.63V and supports HCSL or LVDS output formats. Certified under AEC-Q100, it functions within a temperature range of -40°C to +105°C. This component eliminates the need for external crystals, offering high reliability and low jitter performance suitable for demanding automotive communication and storage applications.

Feature Summary

• AEC-Q100 qualified for Automotive Grade 2 (-40°C to +105°C)
• Dual 100MHz differential outputs with HCSL/LVDS format options
• Integrated MEMS resonator requiring no external 25MHz crystal
• Compliant with PCIe Gen1/2/3/4 universal clock specifications

Applications

• Automotive infotainment systems
• ADAS sensor interfaces
• In-vehicle networking modules
• Automotive storage controllers

Procurement Notes

Verify the specific suffix 'VAO' against the manufacturer's official documentation to confirm exact shipping configuration and marking details. Ensure the selected package matches the 14-VFQFN footprint requirements for the target PCB layout. Confirm that the AEC-Q100 qualification aligns with the specific automotive grade requirements of the end application.

Selection Notes

Select this model when dual differential 100MHz clocks are required for PCIe interfaces in automotive environments. The integrated MEMS technology removes the need for external crystal components, simplifying the bill of materials. Verify that the 2.25V to 3.63V supply voltage range is compatible with the system power rails. Consider the 14-VFQFN package size if board space is constrained.

Part Context

This part belongs to the DSA557 series of silicon MEMS clock generators from Microchip Technology. The series replaces traditional quartz oscillators to improve shock and vibration resistance. The DSA557-03 variant specifically offers two outputs, distinguishing it from the three-output DSA557-04 and four-output DSA557-05 models which utilize a 20-pin package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.