SI5338B-B04802-GM

Overview

The SI5338B-B04802-GM is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent outputs with zero ppm precision. The device supports differential and single-ended formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. Maximum output frequencies reach 710 MHz for differential pairs and 350 MHz for single-ended signals. It operates from a 1.8 V, 2.5 V, or 3.3 V core supply with typical current consumption of 45 mA. Integrated jitter is typically 0.7 ps RMS.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm accuracy.
• Supports flexible input references: external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Features glitchless frequency adjustments via independent increment/decrement in 1 ppm steps and phase adjustment with <20 ps resolution.
• Configurable spread spectrum modulation on any output with rates from 33 to 63 kHz and deviation from 0.5% to 5.0%.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant timing
• Ethernet switch/router clocking
• Processor and FPGA clock generation
• Broadcast video/audio timing systems

Procurement Notes

Verify the specific B04802 factory configuration code against the official Skyworks ordering guide to ensure correct pre-programmed frequencies and output formats. Confirm package marking and RoHS compliance status prior to procurement.

Selection Notes

Select this component when designing systems requiring up to four independent clock frequencies derived from a single reference source. Ensure the required output voltage levels (1.5 V, 1.8 V, 2.5 V, or 3.3 V) match the target load requirements for each driver.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'B' suffix indicates a specific factory-programmed configuration variant within the series, distinct from generic unprogrammed versions.

Replacement Considerations

Direct pin-compatible replacements within the same family include other Si5338 variants such as SI5338A or SI5338Q. Verify that the substitute part number supports the required maximum output frequencies and output signal formats for the specific application design.

FAQ

What is the maximum input frequency supported by the Si5338?

The device supports differential input frequencies up to 710 MHz. Single-ended CMOS inputs are supported up to 200 MHz, while SSTL/HSTL inputs support up to 350 MHz.

Can the Si5338 perform glitch-free frequency changes?

Yes, the device features an independent frequency increment/decrement capability that allows glitchless frequency adjustments in 1 ppm steps.

What output signal formats are available?

The outputs support LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats. Each output driver can be independently configured for voltage and format.