SI5338B-B03800-GM

Overview

The Skyworks SI5338B-B03800-GM is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent output clocks with zero ppm precision from a single core supply of 1.8, 2.5, or 3.3 V. The device supports differential inputs up to 710 MHz and generates outputs ranging from 0.16 MHz to 710 MHz. Key electrical parameters include a typical RMS jitter of 0.7 ps, a maximum input frequency of 710 MHz, and a maximum output frequency of 710 MHz. It operates within a temperature range of -40°C to +85°C in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential signals (up to 710 MHz).
• Independent output voltage support for LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems.
• Ethernet switch and router timing.
• Processor and FPGA clocking solutions.
• Broadcast video and audio timing distribution.

Procurement Notes

Verify the specific B03800 factory configuration against project requirements using ClockBuilder Pro software. Confirm that the I2C address and register settings match the system controller capabilities. Ensure the selected output driver voltages align with the target load specifications before finalizing the design.

Selection Notes

Select this component when zero ppm frequency accuracy across multiple independent outputs is required. The device supports glitchless frequency adjustments via pin control. Verify that the input source matches the supported frequency ranges for the chosen interface type. Ensure the PCB land pattern accommodates the 4x4 mm QFN-24 package dimensions.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. The 'B' suffix indicates a specific factory-programmed configuration. The 'GM' suffix denotes the 24-lead QFN package variant. This model replaces discrete crystal oscillators by providing flexible frequency translation and signal conditioning in a compact form factor.

Replacement Considerations

Direct replacements must maintain the same MultiSynth architecture and I2C programming interface. Verify that alternative devices support the required 710 MHz input/output frequencies and similar jitter specifications. Check for pin-to-pin compatibility if board space is constrained.