SI5338A-B10468-GM

Overview

The SI5338A-B10468-GM is an I2C-programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports a core supply of 1.8, 2.5, or 3.3 V and operates within a temperature range of –40 to +85 °C. Key electrical parameters include a maximum input frequency of 710 MHz, typical phase jitter of 0.7 ps RMS, and a typical core supply current of 45 mA. It is housed in a space-saving 4 x 4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with true zero ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical, supporting PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliance.
• 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 per driver (1.5, 1.8, 2.5, or 3.3 V) with support for LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL, and CML formats.

Applications

• PCIe Gen 1/2/3/4 systems
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix B10468 against the manufacturer's official documentation to confirm factory programming details. Ensure compatibility with the I2C/SMBus interface requirements and check for moisture sensitivity handling procedures during assembly.

Selection Notes

Select this component when low-jitter, any-frequency synthesis is required for multiple outputs. Confirm that the desired output frequencies fall within the supported ranges for the chosen signal format (e.g., up to 710 MHz for LVDS/LVPECL/CML). Verify power supply constraints match the available 1.8, 2.5, or 3.3 V core voltages.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. It replaces discrete crystal oscillators by providing flexible frequency translation and buffering capabilities in a single integrated circuit, reducing board space and component count.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.

FAQ

What is the maximum input frequency supported by the SI5338A?

The device supports a maximum differential input frequency of 710 MHz.

Can the output drivers operate at different supply voltages?

Yes, each output driver can be independently configured for 1.5, 1.8, 2.5, or 3.3 V operation.

Is the device compliant with PCIe standards?

Yes, it is compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 Separate Reference No Spread (SRNS) specifications.