SI5338N-A-GM

Overview

The SI5338N-A-GM 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 formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates with a core supply of 1.8 V, 2.5 V, or 3.3 V and accepts inputs up to 710 MHz. Key electrical parameters include a typical phase jitter of 0.7 ps RMS, a maximum output frequency of 710 MHz, and a maximum input frequency of 710 MHz. It is housed in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm precision.
• Supports flexible input references: external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Configurable output drivers support various signal formats and independent supply voltages (1.5, 1.8, 2.5, or 3.3 V).
• Features glitchless frequency adjustments via independent increment/decrement and programmable spread spectrum.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout compatibility and factory programming settings. Confirm that the I2C pull-up voltage requirements align with the system bus voltage, particularly if operating below 2.5 V.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single low-jitter synthesizer. Ensure the required output frequencies fall within the supported ranges for the chosen driver format (e.g., LVDS up to 710 MHz, CMOS up to 200 MHz). Verify thermal dissipation capabilities given the 45 mA typical core supply current.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It is designed to replace crystal oscillators and function as a frequency translator. The device integrates a PLL and MultiSynth stages to provide high-precision clock generation in a compact 4x4 mm QFN package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.