SI5338L-B04838-GMR

Overview

The SI5338L-B04838-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports input frequencies up to 710 MHz and generates outputs ranging from 0.16 MHz to 710 MHz across formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device features low phase jitter of 0.7 ps RMS typical, zero ppm frequency accuracy, and independent voltage control per driver (1.5 V, 1.8 V, 2.5 V, or 3.3 V). Powered by a single core supply of 1.8 V, 2.5 V, or 3.3 V, it operates within a temperature range of –40 °C to +85 °C in a compact 4 x 4 mm QFN-24 package.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis with 0 ppm precision on four differential output drivers.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• 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 selection per driver (1.5 V, 1.8 V, 2.5 V, or 3.3 V) and support for glitchless frequency adjustments via I2C/SMBus interface.

Applications

• Ethernet switch/router timing
• PCIe Gen1/2/3/4 clocking
• Broadcast video/audio timing
• Processor and FPGA clocking
• MSAN/DSLAM/PON systems

Procurement Notes

Verify the specific ordering suffix B04838 against the manufacturer's current documentation to confirm the exact pre-programmed configuration, as this suffix defines the factory-set register values. Ensure compatibility with the target system's I2C address and voltage requirements before procurement.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies with low jitter and flexible output formats. Verify that the required output frequencies fall within the supported ranges for the chosen signal format (e.g., LVDS up to 710 MHz, CMOS up to 200 MHz). Confirm that the input source matches one of the supported reference types.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'L' designation typically indicates a specific pinout or feature set variant within the series, while 'B04838' denotes a unique factory-programmed configuration. The '-GMR' suffix indicates tape-and-reel packaging for surface-mount assembly.

Replacement Considerations

Direct replacements must match the Si5338 family specifications. Verify that alternative parts support the same output count, frequency ranges, and jitter performance. Check if the replacement requires reprogramming via ClockBuilder Pro software to replicate the original B04838 configuration.