SI5338M-B04122-GM

Overview

The Skyworks SI5338M-B04122-GM is an I2C-programmable quad clock generator utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended outputs with configurable signal formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. It features low phase jitter of 0.7 ps RMS typ, zero ppm frequency accuracy, and spread spectrum capabilities. The component is housed in a 4x4 mm QFN-24 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm precision.
• Highly-configurable output drivers support up to four differential outputs, eight single-ended outputs, or mixed configurations.
• Low phase jitter 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 include external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).

Applications

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

Procurement Notes

Verify the specific factory programming configuration associated with the B04122 suffix against system requirements. Confirm availability status as custom programmed devices may have limited stock or longer lead times compared to standard variants. Ensure I2C pull-up voltages match the bus voltage specifications for reliable communication.

Selection Notes

Select this model when independent frequency synthesis across four outputs is required without external distribution buffers. Choose based on the necessary output voltage levels (1.5V, 1.8V, 2.5V, or 3.3V) and signal formats. Verify that the input reference source matches the supported frequency ranges for crystal, CMOS, or differential inputs.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces multiple discrete oscillators by providing flexible frequency generation. The 'M' suffix typically denotes a specific manufacturing lot or revision, while 'B04122' indicates the unique factory-programmed clock configuration stored in non-volatile memory.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different factory programming codes (e.g., SI5338A-Bxxxxx-GM). Ensure the replacement part supports the required output frequencies and formats, as the electrical characteristics are identical but the synthesized frequencies differ.