DSA557-0334FI1TVAO

Overview

The DSA557-0334FI1TVAO is an automotive-grade MEMS clock generator designed for PCI Express applications. It provides two differential 100 MHz outputs with HCSL and LVDS formats. The device operates within a supply voltage range of 2.25V to 3.63V and supports an operating temperature range of -40°C to +85°C. Packaged in a compact 14-VFQFN (2.5x3.2 mm) footprint, it integrates a MEMS resonator, eliminating the need for external crystals. Key electrical parameters include a typical supply current of 60 mA when enabled and period jitter of 2.5 ps RMS.

Feature Summary

• Automotive AEC-Q100 Qualified
• Complies with PCIe Gen1/2/3/4 Common Clock Spec
• Integrated MEMS Resonator Eliminates External Crystal
• Two Outputs: HCSL and LVDS Options

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 'FI' package code indicates the 14-Lead VQFN form factor. Ensure compatibility with the required output formats (HCSL/LVDS) specified by the internal coding structure before finalizing procurement.

Selection Notes

Select this component for designs requiring dual-channel 100 MHz PCIe clocks in automotive environments. The DSA557-03 variant is suitable for space-constrained PCBs due to its 14-pin VQFN package. Choose based on the required stability (±100 ppm or ±50 ppm) and ensure the power supply filtering meets the 0.1 µF capacitor recommendation per VDD pin for optimal jitter performance.

Part Context

This part belongs to the DSA557 series of Multiple Output MEMS PCIe Clock Generators for Automotive. The series includes DSA557-03 (two outputs), DSA557-04 (three outputs), and DSA557-05 (four outputs). All variants share similar MEMS-based reliability features and compliance with PCIe standards, differing primarily in output count and package size.

Replacement Considerations

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