SI5338A-B05144-GM

Overview

The SI5338A-B05144-GM is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent clocks with zero ppm precision via an I2C interface. The device supports input frequencies up to 710 MHz and generates outputs ranging from 0.16 MHz to 710 MHz depending on the format (LVPECL, LVDS, HCSL, CMOS, SSTL/HSTL). Key electrical parameters include a core supply voltage of 1.8 V, 2.5 V, or 3.3 V, a typical operating current of 45 mA, and a typical RMS phase jitter of 0.7 ps. It operates within a temperature range of –40 °C to +85 °C in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with 0 ppm accuracy on four independent outputs.
• Low phase jitter performance with a typical RMS value of 0.7 ps.
• Flexible input support including external crystals (8–30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz.
• Independent output drivers configurable for various formats (LVPECL, LVDS, HCSL, CMOS, SSTL/HSTL) and voltages (1.5, 1.8, 2.5, 3.3 V).

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems
• Ethernet switch/router and 1 GbE/10 GbE interfaces
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards and Fibre Channel/SAN

Procurement Notes

Verify the specific ordering suffix B05144 against Skyworks documentation to confirm factory-programmed frequency and phase configurations. Ensure compatibility with the I2C bus voltage levels (1.71 V to 3.63 V) and register settings if the bus voltage is below 2.5 V. Confirm package integrity for the 24-QFN form factor and check for moisture sensitivity handling requirements during assembly.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies with high precision and low jitter. Ensure the required output formats (LVPECL, LVDS, etc.) and frequencies fall within the specified ranges for each driver. Verify that the input reference source matches one of the supported types (crystal, CMOS, differential). Consider the power consumption profile, noting the typical 45 mA core current, and ensure thermal management suits the 4x4 mm QFN package.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators from Skyworks Solutions. It is designed to replace multiple discrete crystal oscillators in complex digital systems. The 'A' designation typically refers to the silicon revision or feature set within the Si5338 series, while the suffix indicates specific programming parameters.

Replacement Considerations

Direct pin-to-pin replacements within the same family may include other Si5338 variants with different pre-programmed frequencies. Verify that alternative parts support the same output formats and jitter specifications. Cross-reference with Si5338B or Si5338Q if different frequency ranges or packaging options are needed, ensuring functional equivalence in terms of I2C control and electrical characteristics.