DSA557-0344FL0VAO

Description：2-OUTPUT AUTOMTIVE GRADE MEMS PC
Series：DSA557-03

SKU:d467882c8e44 Category: Application Specific Clock/Timing Brand: Microchip Technology

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Product introduction

Product Detailed Parameters

Description：2-OUTPUT AUTOMTIVE GRADE MEMS PC
Series：DSA557-03
PLL：Yes
Mfr：Microchip Technology
Main Purpose：PCI Express (PCIe)
Input：-
Output：HCSL, LVCMOS, LVDS
Number of Circuits：1
Ratio - Input:Output：1:02
Differential - Input:Output：No/Yes
Frequency - Max：100MHz
Voltage - Supply：2.25V ~ 3.63V
Operating Temperature：-40°C ~ 105°C (TA)
Mounting Type：Surface Mount
Package / Case：14-VFQFN Exposed Pad
Supplier Device Package：14-QFN (2.5x3.2)
Grade：-
Qualification：-

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DSA557-0344FL0VAO

Overview

The DSA557-0344FL0VAO is a two-output PCI Express clock generator from Microchip Technology, utilizing silicon MEMS technology to eliminate external crystals. It provides 100 MHz differential outputs 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, LVDS, and LVCMOS output formats. It is qualified to AEC-Q100 standards for Automotive Grade 2, functioning reliably between -40°C and +105°C. The component features dedicated output enable pins and offers high shock and vibration immunity.

Feature Summary

Automotive AEC-Q100 Qualified (Grade 2: -40°C to +105°C)
Complies with PCIe Gen1/2/3/4 Common Clock Specifications
Integrated MEMS Resonator Eliminates External 25 MHz Crystal
Available in Space-Saving 14-Lead QFN Package

Applications

Automotive Infotainment Systems
Automotive Advanced Driver Assistance Systems (ADAS)
Autonomous Driving Applications
In-Vehicle Network Interfaces

Procurement Notes

Verify the specific ordering suffix 'AO' corresponds to standard automotive packaging requirements. Confirm that the 'L' temperature code indicates the extended -40°C to +105°C range suitable for automotive grade 2 applications. Ensure compatibility with the 14-lead QFN footprint during PCB layout planning.

Selection Notes

Select this model for designs requiring two independent 100 MHz clocks with low jitter performance. The integrated MEMS resonator simplifies design by removing the need for external crystal components. Verify that the required output format (HCSL, LVDS, or LVCMOS) matches the specific digit codes in the part number structure.

Part Context

This component belongs to the DSA557 series, which includes variants with three and four outputs (DSA557-04 and DSA557-05). All models share the same core MEMS technology and PCIe compliance but differ in pin count and package size, with the DSA557-03 specifically utilizing a compact 14-lead QFN form factor.