SI5338M-B04372-GM

Overview

The SI5338M-B04372-GM is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential inputs up to 710 MHz and offers flexible output formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V with typical current consumption of 45 mA. Key electrical parameters include a maximum input frequency of 710 MHz, a typical RMS jitter of 0.7 ps, and an operating temperature range of -40 °C to +85 °C.

Feature Summary

• MultiSynth™ technology enables zero ppm precision synthesis for four independent outputs.
• Flexible input reference options: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), or differential (5–710 MHz).
• Independent output voltage configuration per driver (1.5, 1.8, 2.5, or 3.3 V) with glitchless frequency adjustment in 1 ppm steps.
• Configurable spread spectrum modulation with adjustable deviation (0.5%–5.0%) and rate (33–63 kHz).

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant systems.
• Ethernet switch/router and telecom line card timing.
• Processor and FPGA clocking solutions.
• Broadcast video/audio timing infrastructure.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet to confirm pinout compatibility and factory programming settings. Confirm that the I2C pull-up voltage requirements align with the system bus voltage, particularly if operating below 2.5 V. Ensure ESD protection measures are adequate given the device's sensitivity ratings.

Selection Notes

Select this component when multiple distinct frequencies are required from a single package with low jitter performance. Verify that the desired output signal formats (LVPECL, LVDS, etc.) match the load requirements of the destination devices. Check that the input reference source falls within the supported frequency ranges for the chosen input type.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators and frequency translators, consolidating timing functions into a compact 4x4 mm QFN-24 package. The 'M' suffix typically denotes specific factory programming or feature sets within the broader Si5338 product line.

Replacement Considerations

Direct replacements must be sought from the Si5338 family variants (e.g., SI5338A, SI5338Q) with matching output configurations. Ensure substitute parts support the same input frequency range and output drive strengths. Verify software compatibility using ClockBuilder Pro for reprogramming if necessary.