SI5338N-B04892-GMR

Overview

The SI5338N-B04892-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers with 0 ppm precision. It supports differential and single-ended outputs including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V, with individual output supplies configurable between 1.5 V and 3.3 V. Key electrical parameters include a maximum input frequency of 710 MHz, typical phase jitter of 0.7 ps RMS, and an operating temperature range of -40 °C to +85 °C.

Feature Summary

• I2C/SMBus programmable interface for flexible configuration
• Independent output voltage control (1.5 V, 1.8 V, 2.5 V, or 3.3 V)
• Glitchless frequency adjustment via independent increment/decrement feature
• Supports spread spectrum modulation on any output

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout assignments and factory programming configurations. Ensure compatibility with I2C bus voltage levels, as register settings may be required if the bus voltage is below 2.5 V. Confirm package integrity upon receipt, as the component utilizes a moisture-sensitive QFN-24 housing.

Selection Notes

Select this model when zero ppm frequency accuracy across multiple independent clocks is required. Validate that the target application supports the specific signal formats (LVPECL, LVDS, etc.) and voltage levels provided by the four output drivers. Consider the thermal resistance characteristics and ensure adequate PCB land patterns are designed for the 4x4 mm QFN package to maintain junction temperatures within the specified -40 °C to +85 °C range.

Part Context

This component belongs to the Si5338 family of high-performance clock generators. The 'N' in the part number typically denotes a specific factory-programmed configuration variant within the series. The device replaces discrete crystal oscillators and serves as a frequency translator, consolidating multiple clock sources into a single low-jitter solution.

Replacement Considerations

Direct replacements must match the 24-QFN package and support four independent outputs. Verify that alternative devices offer comparable jitter performance (typically <1 ps RMS) and support the necessary output voltage levels. Cross-reference the I2C programming requirements to ensure software compatibility.