SI5338C-B04461-GM

Overview

The Skyworks SI5338C-B04461-GM is a programmable quad clock generator utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V with a typical current consumption of 45 mA. It features low phase jitter of 0.7 ps RMS typ, flexible input references up to 710 MHz, and I2C/SMBus programming via ClockBuilder Pro software.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with true zero ppm accuracy.
• Supports highly configurable output drivers for up to four differential outputs, eight single-ended outputs, or combinations thereof.
• Features glitchless frequency adjustments in 1 ppm steps and independent phase adjustment with <20 ps step accuracy.
• Includes highly configurable spread spectrum (SSC) capabilities with frequency deviation from 0.5% to 5.0%.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems
• Ethernet switch/router and 1 GbE/10 GbE interfaces
• Processor and FPGA clocking solutions
• Broadcast video/audio timing applications

Procurement Notes

Verify the specific ordering suffix B04461 against the manufacturer's latest documentation to confirm factory configuration parameters. Ensure compatibility with the required I2C bus voltage levels (1.71 V to 3.63 V) and check for moisture sensitivity handling requirements during assembly.

Selection Notes

Select this component when replacing multiple crystal oscillators with a single programmable source. Confirm that the required output frequencies fall within the supported ranges: LVPECL/LVDS up to 710 MHz, HCSL up to 250 MHz, and CMOS up to 200 MHz. Validate thermal performance given the 37 °C/W junction-to-ambient resistance in still air.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It is designed to replace discrete oscillators and frequency translators. The device integrates a PLL, MultiSynth synthesizers, and configurable output buffers into a compact 4x4 mm QFN package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical specifications if considering alternative devices from other manufacturers.

FAQ

What is the maximum input frequency supported by the Si5338?

The device supports differential inputs up to 710 MHz, SSTL/HSTL inputs up to 350 MHz, and CMOS inputs up to 200 MHz.

Can the Si5338 perform glitchless frequency adjustments?

Yes, it features an independent frequency increment/decrement capability that enables glitchless frequency adjustments in 1 ppm steps.

What output voltage levels are supported per driver?

Each output driver supports independent voltage configurations of 1.5 V, 1.8 V, 2.5 V, or 3.3 V.