SI5338C-B04503-GMR

Overview

The Skyworks SI5338C-B04503-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent output drivers with zero ppm precision. The device supports flexible input references including differential inputs up to 710 MHz and single-ended CMOS up to 200 MHz. Outputs support LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. Key electrical parameters include a core supply voltage of 1.8 V, 2.5 V, or 3.3 V, typical operating current of 45 mA, and RMS jitter as low as 0.7 ps. It operates within a temperature range of -40 °C to +85 °C in a 24-lead QFN package.

Feature Summary

• I2C/SMBus programmable with ClockBuilder Pro software
• Four independent outputs supporting any frequency and format
• Low phase jitter: 0.7 ps RMS typical
• Glitchless frequency adjustment via increment/decrement pins

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific B04503 configuration code against the official Skyworks datasheet ordering section to ensure correct factory programming. Confirm the GMR suffix indicates tape-and-reel packaging. Check for RoHS compliance documentation and moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this model when four independent clock signals are required with varying frequencies or formats. Ensure the input reference matches the supported ranges (differential up to 710 MHz, CMOS up to 200 MHz). Verify that the required output voltage levels (1.5V, 1.8V, 2.5V, or 3.3V) align with the target receiver specifications.

Part Context

This component belongs to the Si5338 family of I2C-programmable clock generators. The 'C' designation typically refers to a specific factory pre-programmed configuration variant within the series. The 'GMR' suffix denotes Green (RoHS compliant) packaging in a reel format, distinguishing it from tray-packaged variants like the '-GM' suffix.

Replacement Considerations

Direct replacements must be from the Si5338 family with identical pinout and functionality. Verify that alternative part numbers match the required output frequencies and formats. Generic Si5338 devices may require reprogramming if their factory settings differ from the B04503 configuration.