DSA557-0334FI1VAO

Overview

The DSA557-0334FI1VAO is a two-output automotive-grade MEMS PCI Express clock generator from Microchip Technology. It generates 100 MHz differential clocks compliant with PCIe Gen1/2/3/4 common clock specifications. The device operates within a supply voltage range of 2.25V to 3.63V and supports HCSL and LVDS output formats. It utilizes an integrated MEMS resonator, eliminating the need for external crystals. The component is housed in a 14-lead VQFN package (2.5x3.2 mm) and is qualified for an operating temperature range of -40°C to +85°C.

Feature Summary

• Automotive AEC-Q100 Qualified
• Complies with PCIe Gen1/2/3/4 Common Clock Spec
• Integrated MEMS Resonator Eliminates External Crystal
• Wide Temperature Range: –40°C to +85°C

Applications

• Automotive Infotainment
• Automotive ADAS
• Autonomous Driving
• In-Vehicle Network

Procurement Notes

Verify the specific ordering suffix 'I' corresponds to the Automotive Grade 3 (-40°C to +85°C) temperature range as defined in the Product Identification System. Confirm that the 'F' package designation matches the required 14-Lead VQFN form factor. Ensure the stability parameter aligns with system requirements before procurement.

Selection Notes

Select this model when a two-output PCIe clock solution is required for automotive environments. The 'I' suffix indicates the narrower temperature range compared to the 'L' variant. Verify that the HCSL or LVDS output options meet the interface requirements of the target PCIe receiver components.

Part Context

This part belongs to the DSA557 series, which includes variants with three (DSA557-04) and four (DSA557-05) outputs. All members share the same silicon MEMS technology and core functionality but differ in pin count and output configuration. The DSA557-03 specifically targets applications requiring dual differential clock lines.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.