SI5338N-B05519-GMR

Overview

The SI5338N-B05519-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four output drivers with 0 ppm precision. It supports differential and single-ended outputs up to 710 MHz, configurable for LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats. The device operates on a single core supply of 1.8, 2.5, or 3.3 V, drawing a typical current of 45 mA. Key electrical parameters include a typical phase jitter of 0.7 ps RMS, an operating temperature range of -40°C to +85°C, and a 24-lead QFN package.

Feature Summary

• I2C/SMBus programmable interface with independent glitchless frequency and phase adjustments
• Low phase jitter of 0.7 ps RMS typ, compliant with PCIe Gen 1/2/3/4 standards
• Flexible input reference supporting external crystals (8–30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz
• Highly configurable spread spectrum generation with adjustable frequency deviation and modulation rate

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS applications
• Ethernet switch/router and 1 GbE/10 GbE timing
• Processor and FPGA clocking systems
• Broadcast video/audio timing distribution
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pin assignments and output configurations. Ensure compatibility with I2C bus voltage levels, particularly when operating below 2.5 V. Confirm that the selected configuration meets the required jitter specifications for the target application, as single-ended outputs may impact overall jitter performance compared to differential setups.

Selection Notes

Select this component when zero ppm frequency accuracy and low jitter are critical for high-speed serial interfaces like PCIe or Ethernet. Consider the available input reference types; the device supports various sources including crystals and direct clock inputs. Evaluate the output driver requirements, as each of the four outputs can be independently configured for different signal formats and supply voltages to match downstream load requirements.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'N' in the part number typically denotes a specific pinout or output configuration variant within the series. The device replaces multiple discrete crystal oscillators, reducing board space and power consumption while providing flexible clock synthesis capabilities for complex digital systems.

Replacement Considerations

Direct replacements must maintain the 24-QFN package and I2C programming interface. Verify that alternative parts support the same maximum output frequencies and jitter specifications. Check for compatibility with existing firmware or ClockBuilder Pro configurations if migrating between manufacturers.