SI5338C-B05037-GM

Overview

The SI5338C-B05037-GM is an I2C-programmable quad clock generator from Skyworks Solutions. It synthesizes any frequency on four output drivers using MultiSynth technology, achieving zero ppm precision. The device supports flexible input references including external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential inputs (up to 710 MHz). Outputs are independently configurable for formats such as LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL with supply voltages of 1.5, 1.8, 2.5, or 3.3 V. It operates from a single core supply of 1.8, 2.5, or 3.3 V, draws 45 mA typical current, and functions within a temperature range of –40 to +85 °C in a 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• Flexible input reference options: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz).
• Independent output voltage per driver (1.5, 1.8, 2.5, or 3.3 V) and glitchless frequency adjustments in 1 ppm steps.

Applications

• PCIe Gen1/2/3/4 clocking
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific factory configuration code embedded in the suffix 'B05037' against the official Skyworks ordering guide to ensure the programmed frequencies and pin assignments match the design requirements. Confirm that the 'GM' suffix indicates the standard tape-and-reel packaging format compatible with automated assembly processes.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single programmable source. Ensure the required output signal formats (LVPECL, LVDS, etc.) and frequencies fall within the specified ranges. Verify that the system power budget accommodates the 45 mA typical core supply current and that the I2C bus voltage levels are compatible with the device's interface specifications.

Part Context

This part belongs to the Si5338 family of low-jitter clock generators. The 'C' typically denotes a specific commercial grade or configuration variant within the Skyworks portfolio. The device utilizes patented MultiSynth architecture to provide high flexibility in clock distribution networks, serving as a central timing solution for high-speed digital interfaces.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different factory configurations (e.g., SI5338C-Bxxxxx-GM). Ensure the substitute part number has the identical electrical characteristics and output drive capabilities required by the application circuit.