SI5338A-B01223-GMR

Overview

The SI5338A-B01223-GMR is a high-performance, low-jitter clock generator from Skyworks Solutions. It synthesizes any frequency on four independent output drivers using MultiSynth technology for zero ppm precision. The device supports input frequencies up to 710 MHz and generates outputs ranging from 0.16 to 710 MHz depending on the format (LVPECL/LVDS/CML). It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V with a typical current of 45 mA. Key electrical parameters include a typical phase jitter of 0.7 ps RMS and an operating temperature range of –40 to +85 °C.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential 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.
• 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) and support for various signal formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL.

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 latest documentation to confirm package type and tape/reel specifications. Ensure compatibility with I2C/SMBus interface requirements and check for moisture sensitivity level handling during assembly. Confirm that the selected part number matches the required output configurations and frequency ranges for the target application.

Selection Notes

Select this component when designing systems requiring independent clock generation with low jitter and flexible output formats. Consider the available input sources (crystal vs. external clock) and ensure the required output frequencies fall within the supported ranges for the chosen signal format. Verify power supply constraints and thermal management needs for the QFN-24 package.

Part Context

This part belongs to the Si5338 family of I2C-programmable quad clock generators. It is designed to replace multiple discrete oscillators in complex digital systems. The 'B' suffix typically denotes a specific performance grade or configuration variant within the series, while 'GMR' indicates the reel packaging option.

Replacement Considerations

Direct replacements within the same family include other Si5338 variants such as SI5338A-B-GM or SI5338Q-B-GMR, provided they meet the specific frequency and output format requirements. Always verify pinout compatibility and register programming differences before substitution.