SI5338A-B05991-GMR

Overview

The SI5338A-B05991-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four output drivers with 0 ppm precision, replacing up to four crystal oscillators. The device supports differential and single-ended outputs including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. Key electrical parameters include a maximum input/output frequency of 710 MHz, typical phase jitter of 0.7 ps RMS, and core supply voltages 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 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm accuracy.
• Low phase jitter of 0.7 ps RMS typ, 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, and HSTL formats with independent voltage levels (1.5V, 1.8V, 2.5V, 3.3V).
• 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
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix B05991 against the manufacturer's official ordering guide to confirm the exact pre-programmed frequency configuration and output pin assignments. Ensure compatibility with I2C/SMBus interface requirements for system integration. Check humidity sensitivity handling procedures as indicated in the datasheet packaging specifications.

Selection Notes

Select this component when low jitter (<1 ps RMS) and flexible output format/voltage configurations are required. It is suitable for applications needing glitchless frequency adjustments via independent increment/decrement features. Consider the 4x4 mm QFN-24 package size constraints and verify that the required input frequencies fall within the supported ranges for the chosen input type.

Part Context

The SI5338A belongs to the Si5338 family of I2C-programmable clock generators from Skyworks Solutions. This series is designed to replace multiple discrete oscillators with a single highly-configurable IC. The 'A' designation typically indicates a specific performance grade or feature set within the broader Si5338 product line, which also includes variants like the Si5338G and Si5338K.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. When replacing legacy oscillators, ensure the new design accommodates the I2C programming interface and power supply requirements (1.8V, 2.5V, or 3.3V core supply).