SI5338A-B05146-GM

Overview

The Skyworks SI5338A-B05146-GM is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent output clocks with zero ppm frequency accuracy, supporting any frequency up to 710 MHz on differential outputs and up to 350 MHz on single-ended formats. The device features a typical RMS phase jitter of 0.7 ps and accepts various input references including external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz). It operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V within a 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm precision.
• Low phase jitter performance of 0.7 ps RMS typical.
• Flexible input reference options: external crystal, CMOS, SSTL/HSTL, and differential signals.
• Independently configurable outputs support LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats.

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

Procurement Notes

Verify the specific ordering suffix B05146 against the manufacturer's current datasheet to confirm the exact pre-configured frequency plan and output settings. Confirm RoHS compliance status and moisture sensitivity level requirements for the assembly process.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies derived from a single source. Ensure the required output voltage levels (1.5 V, 1.8 V, 2.5 V, or 3.3 V) match the load requirements. Verify that the input reference signal type and frequency range fall within the supported specifications for the desired output configuration.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The 'A' designation typically indicates the maximum output frequency capability, while the alphanumeric suffix specifies the factory-programmed frequency plan. The device replaces multiple discrete oscillators in complex digital systems.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different frequency plans. Verify that the substitute part supports the required output frequencies and formats. Cross-family replacements like the Si5330 are obsolete and not suitable.