SI5338N-B05263-GM

Overview

The SI5338N-B05263-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 and single-ended outputs with frequencies up to 710 MHz. The device operates from a single core supply of 1.8, 2.5, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Configuration is performed via an I2C/SMBus interface, allowing for flexible input references including crystals, CMOS, and differential signals.

Feature Summary

• Four independent output drivers supporting LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats
• Low phase jitter performance of 0.7 ps RMS typical
• Flexible input reference options: external crystal (8-30 MHz), CMOS (5-200 MHz), and differential (5-710 MHz)
• Independent output voltage selection per driver: 1.5, 1.8, 2.5, or 3.3 V

Applications

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

Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B05263 against design requirements using ClockBuilder Pro software. Confirm that the QFN-24 package thermal characteristics and PCB land pattern recommendations are integrated into the layout to ensure reliable operation within the specified temperature range.

Selection Notes

Select this component when zero ppm frequency accuracy and glitchless frequency adjustments are required across multiple domains. Ensure the input source matches the supported formats, such as differential inputs up to 710 MHz. Validate that the required output signal levels and drive strengths align with the independently configurable VDDOx supplies.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete oscillators by providing any-frequency synthesis on four outputs. The N suffix typically denotes a specific factory-programmed configuration variant within the broader Si5338 product line.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different factory configurations. Verify that alternative part numbers support the same output formats and frequency ranges required by the application before substitution.

FAQ

What is the maximum input frequency supported?

The device supports differential inputs up to 710 MHz, while single-ended CMOS inputs are supported up to 200 MHz.

Can the output frequencies be adjusted without glitches?

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

What is the typical phase jitter performance?

The Si5338 offers a typical phase jitter of 0.7 ps RMS under standard operating conditions.