SI5338A-B02498-GM

Overview

The SI5338A-B02498-GM is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent output drivers with zero ppm precision. The device supports flexible input references, including differential inputs up to 710 MHz and single-ended CMOS inputs up to 200 MHz. Output formats include LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL, and CML, with frequencies ranging from 0.16 MHz to 710 MHz depending on the format. It features low phase jitter of 0.7 ps RMS typical, independent frequency/phase adjustments, and spread spectrum capabilities. 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 24-lead QFN 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, compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• Highly configurable output drivers supporting LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL, and CML formats with independent voltage levels (1.5, 1.8, 2.5, or 3.3 V).
• 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).

Applications

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

Procurement Notes

Verify the specific ordering suffix B02498 against the manufacturer's official documentation to confirm the exact pre-configured frequency plan and output settings. Ensure compatibility with the I2C/SMBus interface requirements for system integration. Confirm that the 24-QFN package dimensions align with the PCB land pattern specifications provided in the datasheet.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single source with high precision. Consider the output format requirements (LVDS, LVPECL, etc.) and voltage levels to ensure driver compatibility. Verify that the input reference frequency falls within the supported ranges for the desired output configuration. Evaluate power consumption needs, as the core supply current varies with output load and frequency.

Part Context

The SI5338A-B02498-GM belongs to the Si5338 family of I2C-programmable clock generators. This series is designed to replace multiple crystal oscillators with a single programmable device. The 'B' suffix typically denotes a specific factory-programmed configuration, while 'GM' indicates the lead-free QFN package. The part integrates NVM for storing configuration data, allowing for free-running operation after initial programming.

Replacement Considerations

Direct replacements must match the 24-QFN package and pinout. Check if alternative Skyworks models like the SI5338Q or SI5338J offer similar jitter performance and output configurations. Ensure that any substitute supports the required input frequencies and output formats. Verify that the replacement part supports I2C programming via ClockBuilder Pro software for configuration flexibility.