DSA557-0344FL1VAO

Overview

The Microchip Technology DSA557-0344FL1VAO is a PCI Express clock generator utilizing silicon MEMS technology. It provides two differential 100MHz HCSL outputs from a single circuit, eliminating the need for an external crystal. The device operates within a supply voltage range of 2.25V to 3.63V and supports automotive Grade 2 qualification (-40°C to +105°C). Packaged in a compact 14-VFQFN (2.5x3.2mm) with an exposed pad, it complies with PCIe Gen1/2/3/4 general clock specifications.

Feature Summary

• Automotive Grade AEC-Q100 certified MEMS clock generator
• Two differential 100MHz HCSL outputs without external crystal
• Compliant with PCIe Gen1/2/3/4 general clock specifications
• Wide operating temperature range: -40°C to +105°C

Applications

• PCI Express interface timing solutions
• Automotive grade communication systems
• Storage and network applications requiring low jitter

Procurement Notes

Verify the specific suffix 'VAO' against official Microchip documentation to confirm any unique manufacturing or compliance attributes associated with this ordering code. Ensure the 14-VFQFN package dimensions match the target PCB footprint requirements. Confirm that the HCSL output format aligns with the receiving component's input specifications.

Selection Notes

Select this component when a PCIe-compliant 100MHz clock source is required for automotive environments. The integrated MEMS resonator removes the need for external crystals, reducing BOM complexity. Verify that the 2.25V to 3.63V supply voltage range matches the system power rails and that the 14-pin VQFN package fits the available board space.

Part Context

This part belongs to the DSA557 series, which replaces quartz and SAW oscillators with silicon MEMS technology. The DSA557-03 variant specifically offers two outputs in a 14-pin package, distinguishing it from the three-output DSA557-04 and four-output DSA557-05 models which use 20-pin packages.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified source material.