SI5338N-B04732-GM

Overview

The SI5338N-B04732-GM is an I2C-programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four output drivers with 0 ppm precision. The device supports a core supply of 1.8, 2.5, or 3.3 V and operates within a temperature range of –40 to +85 °C. Key electrical parameters include a maximum input frequency of 710 MHz, a typical phase jitter of 0.7 ps RMS, and a typical core supply current of 45 mA. It is housed in a 24-lead QFN package.

Feature Summary

• I2C/SMBus programmable interface for flexible configuration
• MultiSynth technology enabling independent, any-frequency synthesis on four outputs
• Low phase jitter performance of 0.7 ps RMS typical
• Supports multiple output formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL

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 factory-programmed NVM configuration associated with the B04732 suffix against the target design requirements. Confirm that the QFN-24 package dimensions and thermal characteristics align with the PCB land pattern specifications provided in the datasheet.

Selection Notes

Select this component when zero ppm frequency accuracy and low jitter are critical for high-speed serial interfaces. Ensure the required output voltage levels (1.5, 1.8, 2.5, or 3.3 V) match the load devices. Use ClockBuilder Pro software to generate the necessary configuration files for the I2C programming interface.

Part Context

This part belongs to the Si5338 family of clock generators. The 'N' designation typically indicates a custom factory-programmed variant with settings stored in non-volatile memory, distinguishing it from fully user-programmable RAM-based versions. The 'GM' suffix denotes the tape and reel packaging format.

Replacement Considerations

Direct replacements must be verified against the specific NVM configuration. Generic Si5338 variants may require reprogramming via I2C if they lack pre-burned settings. Check pinout compatibility and thermal resistance values before substitution.