DSA557-0333FL1VAO

Overview

The DSA557-0333FL1VAO is a two-output automotive-grade MEMS PCI Express clock generator manufactured by Microchip Technology. It provides 100 MHz differential clocks compliant with PCIe Gen1/2/3/4 common clock specifications. The device utilizes integrated silicon MEMS technology, eliminating the need for external 25 MHz crystals. It operates within a supply voltage range of 2.25V to 3.63V and supports an extended industrial temperature range of -40°C to +105°C. The component features dedicated output enable pins and offers HCSL, LVDS, or LVCMOS output formats.

Feature Summary

• Automotive AEC-Q100 Qualified with MIL-STD-883 shock and vibration immunity
• Integrated MEMS resonator eliminates external crystal requirements
• Complies with PCIe Gen1/2/3/4 Common Clock Spec
• Low current consumption: 30% lower than competing devices

Applications

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

Procurement Notes

Verify the specific ordering suffix '33' corresponds to the required output format (LVDS) and stability parameters. Confirm the 'L' suffix indicates the -40°C to +105°C temperature grade. Ensure the package type matches the 14-Lead QFN specification for the DSA557-03 series. Cross-reference the datasheet revision C for updated phase jitter values.

Selection Notes

Select this part for designs requiring two independent 100 MHz outputs with low jitter performance in automotive environments. The DSA557-03 variant is suitable for space-constrained PCBs using the 14-lead QFN package. Consider the LVDS output option indicated by the third digit if differential signaling is preferred over the default HCSL format. Verify power supply filtering requirements as each VDD pin requires a 0.1 μF capacitor.

Part Context

This component belongs to the DSA557 series of high-performance PCI Express clock generators. The DSA557-03 specifically denotes the two-output configuration housed in a compact 14-lead QFN package. It serves as a replacement for quartz oscillators in automotive applications, offering higher reliability and reduced board space compared to traditional SAW or crystal-based solutions.

Replacement Considerations

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