SI5338B-B04327-GMR

Overview

The SI5338B-B04327-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent output clocks with zero ppm precision from a single core supply of 1.8, 2.5, or 3.3 V. The device supports differential inputs up to 710 MHz and generates outputs ranging from 0.16 MHz to 710 MHz across LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats. Key electrical parameters include a typical RMS jitter of 0.7 ps, a maximum input frequency of 710 MHz, and a maximum output frequency of 710 MHz. 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 output drivers with 0 ppm accuracy.
• Supports flexible input references including external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential inputs (up to 710 MHz).
• Features low phase jitter of 0.7 ps RMS typ and glitchless frequency adjustments via independent increment/decrement pins.
• Configurable spread spectrum (SSC) allows modulation rates from 33 to 63 kHz with spreads between 0.5% and 5.0%.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant timing.
• Ethernet switch/router and 1 GbE/10 GbE interfaces.
• Processor and FPGA clocking systems.
• Broadcast video/audio timing distribution.
• Telecom line cards and MSAN/DSLAM/PON equipment.

Procurement Notes

Verify the specific factory configuration encoded in the B04327 suffix against the target design requirements using Skyworks ClockBuilder Pro software. Confirm that the I2C pull-up voltage meets the compatibility register settings if operating below 2.5 V. Ensure ESD handling procedures are followed due to the moisture sensitivity classification.

Selection Notes

Select this component when four independent clock signals with precise frequency relationships are required. Ensure the output driver voltage (VDDOx) matches the load requirements, as each driver supports 1.5, 1.8, 2.5, or 3.3 V independently. Verify that the input reference source aligns with the supported frequency ranges for CMOS or differential inputs.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The series is designed to replace multiple crystal oscillators by providing flexible frequency synthesis. The B04327 designation indicates a specific factory-programmed configuration for frequency and format, distinct from generic or user-programmable variants.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical factory configurations. Verify that alternative SKUs support the same output frequencies and signal formats. Generic Si5338 devices may require reprogramming to match the fixed parameters of the B04327 variant.