SI53258A-D02AMR

Clock Buffers, Drivers Overview

The Si53258A-D02AMR is an automotive-grade, 1-input, 8-output PCIe clock buffer from Skyworks Solutions. It supports PCIe Gen 1 through Gen 6 standards and operates within a temperature range of -40°C to +105°C. The device provides eight differential HCSL outputs with internal termination selectable for either 100 Ω or 85 Ω impedance via the IMP_SEL pin. It accepts a single 100 MHz differential input clock and delivers low additive jitter performance compliant with high-speed interface specifications.

Clock Buffers, Drivers Feature Summary

• Supports PCIe Gen 1/2/3/4/5/6 common clock and SRIS architectures
• Eight differential HCSL outputs with selectable 100 Ω or 85 Ω internal termination
• Excellent additive jitter performance: 0.05 ps RMS (Gen 3/4), 0.025 ps RMS (Gen 5), 0.013 ps RMS (Gen 6)
• Automotive Grade 2 qualification (-40°C to +105°C) with AEC-Q100 and AEC-Q006 compliance

Clock Buffers, Drivers Applications

• Automotive infotainment systems
• Advanced Driver Assistance Systems (ADAS) Electronic Control Units (ECU)
• Radar sensor timing distribution
• LiDAR sensor timing distribution

Clock Buffers, Drivers Procurement Notes

Verify that the 'R' suffix in the part number corresponds to tape and reel packaging as specified in the official ordering guide. Confirm the specific input configuration matches the D02 variant requirements before integration. Ensure design tools such as the Skyworks PCIe Clock Jitter Tool are utilized for compliance validation.

Clock Buffers, Drivers Selection Notes

Select this component when designing for automotive environments requiring support up to PCIe Gen 6 speeds. The choice between D01 and D02 variants depends on the required input count; verify if dual-input capability with MUX is necessary for the system architecture. Ensure power supply filtering recommendations of parallel 1 µF and 0.1 µF capacitors are implemented near each supply pin.

Clock Buffers, Drivers Part Context

This part belongs to the Si5325x family, which includes the Si53258 (8-output) and Si53254 (4-output) devices. The Si53258A-D02AMR specifically denotes the 8-output version with dual inputs packaged in a 40-QFN format. It serves as a fanout buffer for distributing reference clocks to multiple high-speed transceivers in automotive applications.

Clock Buffers, Drivers Replacement Considerations

The Si53258A-D01AM is the single-input equivalent in the same package and specification set. For single-input designs requiring identical electrical characteristics, this variant may be substituted. Verify pin compatibility regarding the CLK_SEL pin functionality if replacing a dual-input model.