SI5338A-A-GM

Overview

The SI5338A-A-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 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/output frequency of 710 MHz, typical phase jitter of 0.7 ps RMS, and a typical core supply current of 45 mA. It features flexible input references and independently configurable output formats.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm precision.
• Low phase jitter of 0.7 ps RMS typ, 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).
• Independently configurable outputs support LVPECL/LVDS (0.16–710 MHz), HCSL (0.16–250 MHz), CMOS (0.16–200 MHz), and SSTL/HSTL (0.16–350 MHz).

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 against the manufacturer's official documentation to confirm package type, tape/reel specifications, and environmental compliance status. Ensure the selected variant matches the required operating temperature range and supply voltage constraints for the target application design.

Selection Notes

Select this component when low-jitter, high-precision clock synthesis is required for multiple independent frequencies. Consider the available output driver formats (LVPECL, LVDS, HCSL, etc.) and their respective frequency limits. Verify that the input reference source matches the supported frequency ranges and signal types defined in the datasheet.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'A' designation typically indicates a specific performance grade or feature set within the series, while the '-GM' suffix denotes the QFN-24 package configuration. Other variants in the family may offer different frequency ranges or output configurations.

Replacement Considerations

Direct replacements must match the 24-QFN package and pinout. Evaluate alternatives based on comparable jitter performance, supported output formats, and I2C compatibility. Verify that substitute devices support the same input frequency ranges and supply voltages.