SI5338N-B04732-GMR

Overview

The SI5338N-B04732-GMR 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 on a single core supply of 1.8 V, 2.5 V, or 3.3 V, drawing 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. It is housed in a compact 4x4 mm QFN-24 package.

Feature Summary

• I2C/SMBus programmable interface for flexible configuration
• Independent output voltage support (1.5, 1.8, 2.5, or 3.3 V)
• Glitchless frequency adjustment via independent increment/decrement feature
• Low phase jitter performance of 0.7 ps RMS typical

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant systems
• Ethernet switch and router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout assignments and factory programming configurations. Ensure compatibility with I2C bus voltage levels by checking register settings if the bus voltage is below 2.5 V. Confirm moisture sensitivity handling requirements during storage and assembly processes.

Selection Notes

Select this component when zero ppm frequency accuracy is required across multiple independent clocks. Evaluate the need for differential versus single-ended output formats, as jitter performance may vary between configurations. Ensure the input reference source matches the supported formats, such as differential inputs up to 710 MHz or CMOS inputs up to 200 MHz.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. The 'N' suffix typically denotes a specific pinout or functional variant within the series, while 'GMR' indicates tape and reel packaging. The device replaces multiple discrete crystal oscillators, reducing board space and design complexity in high-speed digital applications.

Replacement Considerations

Direct replacements must match the 24-QFN package and I2C interface. Verify that alternative parts support the same maximum output frequency of 710 MHz and similar jitter specifications. Check for compatible output driver formats and supply voltage requirements before substitution.