SI5338M-B05848-GM

Overview

The SI5338M-B05848-GM is a programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. Key electrical parameters include a maximum input frequency of 710 MHz, a typical phase jitter of 0.7 ps RMS, and an operating temperature range of -40 °C to +85 °C.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typ, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Highly configurable output drivers supporting up to four differential outputs, eight single-ended outputs, or mixed configurations.
• Flexible input reference options including external crystals (8-30 MHz), CMOS (5-200 MHz), and differential inputs (up to 710 MHz).

Applications

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

Procurement Notes

Verify the specific factory-programmed configuration associated with the B05848 suffix against the system requirements. Confirm that the QFN-24 package dimensions align with the PCB land pattern specifications provided in the datasheet. Ensure I2C pull-up voltages are compatible with the selected core supply voltage.

Selection Notes

Select this component when independent frequency synthesis across multiple domains is required without using multiple discrete oscillators. Verify that the target output frequencies fall within the supported ranges for the chosen signal format (e.g., LVDS up to 710 MHz, CMOS up to 200 MHz). Consider the power consumption implications of the active output drivers and the required spread spectrum modulation settings.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'M' suffix typically denotes a specific factory-programmed configuration variant within the series. The device replaces multiple crystal oscillators, reducing board space and simplifying design by providing flexible clock distribution from a single IC.

Replacement Considerations

Direct replacements must be sought from the Si5338 family with matching factory programming. Generic pin-compatible alternatives may require reprogramming via I2C if they lack pre-configured NVM content. Verify that substitute devices support the same output formats and jitter specifications.