SI5338N-B05168-GM

Overview

The SI5338N-B05168-GM is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential outputs up to 710 MHz and single-ended formats up to 350 MHz. The device operates with a core supply voltage of 1.8 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Configuration is managed via an I2C/SMBus interface, allowing for flexible input references including external crystals (8–30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz.

Feature Summary

• MultiSynth technology enables zero ppm precision frequency synthesis on four independent outputs.
• Supports diverse output formats: LVPECL/LVDS/CML up to 710 MHz, HCSL up to 250 MHz, and CMOS/SSTL/HSTL up to 350 MHz.
• Low phase jitter performance with 0.7 ps RMS typical random jitter.
• Flexible input options including external crystals, CMOS, SSTL/HSTL, and differential signals.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout configuration and factory-programmed settings. Ensure compatibility with the required I2C bus voltage levels, noting that pullup voltages between 1.71 V and 3.63 V are supported. Confirm package availability in the specified QFN-24 form factor for your PCB design constraints.

Selection Notes

Select this component when independent frequency synthesis across four outputs is required with high precision. Ensure the target output frequencies fall within the supported ranges for the chosen signal format (e.g., LVDS up to 710 MHz vs. CMOS up to 200 MHz). Verify that the input reference source matches one of the supported types, such as differential clocks up to 710 MHz or single-ended CMOS up to 200 MHz.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The family is characterized by its ability to replace multiple discrete oscillators with a single low-jitter solution. The specific model indicates a factory-programmed variant designed for immediate deployment without field programming, packaged in a space-saving 4x4 mm QFN.

Replacement Considerations

Direct replacements within the Si5338 family may require verification of the factory-programmed frequency table and output configurations. Cross-model substitution should account for differences in maximum output frequencies and supported input formats. Consult the official datasheet for pin-compatible alternatives if different output drive strengths or voltage levels are needed.