SI5338C-B04503-GM

Overview

The SI5338C-B04503-GM is a programmable clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four output drivers with zero ppm precision. It operates within a core supply voltage range of 1.71 V to 3.63 V and supports frequencies up to 200 MHz for CMOS outputs and 350 MHz for differential formats like LVDS and LVPECL. The device features low phase jitter of 0.7 ps RMS typical, independent output voltage configurations (1.5, 1.8, 2.5, or 3.3 V), and glitchless frequency adjustments. It is housed in a compact 4 x 4 mm QFN-24 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 across all outputs.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Independent output voltage support per driver at 1.5, 1.8, 2.5, or 3.3 V.

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.
• MSAN/DSLAM/PON applications.

Procurement Notes

Verify the specific ordering suffix B04503 against the manufacturer's current datasheet to confirm the exact pre-programmed frequency plan and pinout configuration. Ensure compatibility with I2C/SMBus interface requirements and check for moisture sensitivity handling instructions during assembly.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single IC. Verify that the required output signal formats (LVDS, LVPECL, HCSL, CMOS) fall within the specified frequency ranges. Confirm that the input reference source matches one of the supported types, such as differential or single-ended signals.

Part Context

This part belongs to the Si5338 family of I2C-programmable quad clock generators. The 'C' designation typically indicates a specific frequency range capability, while the alphanumeric suffix defines the factory-programmed register settings. It serves as a replacement for multiple discrete crystal oscillators in complex digital designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate other Si533x series variants based on matching output count, frequency range, and package dimensions if substitution is necessary.

FAQ

What is the maximum output frequency for CMOS format?

The maximum output frequency for CMOS format is 200 MHz.

Can the device operate without an external crystal?

Yes, the device supports CMOS input (5–200 MHz), SSTL/HSTL input (5–350 MHz), and differential input (5–710 MHz) as alternative reference sources.

Is frequency adjustment possible without glitches?

Yes, the device features an independent frequency increment/decrement capability that enables glitchless frequency adjustments in 1 ppm steps.