SI5338K-A-GM

Overview

The SI5338K-A-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 and single-ended formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates with a core supply of 1.8 V, 2.5 V, or 3.3 V and accepts flexible inputs such as external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential signals (up to 710 MHz). Key electrical parameters include a typical phase jitter of 0.7 ps RMS, a maximum output frequency of 710 MHz, and operation within a temperature range of –40 °C to +85 °C.

Feature Summary

• MultiSynth™ Technology: Enables independent, glitchless frequency synthesis with zero ppm precision on all outputs.
• Flexible Input/Output: Supports diverse input references and independently configurable output voltage levels (1.5 V to 3.3 V) and signal formats.
• Low Jitter Performance: Achieves typical phase jitter of 0.7 ps RMS, compliant with PCIe Gen 1/2/3/4 standards.
• Programmability: Configurable via I²C/SMBus interface with features for spread spectrum modulation and independent phase adjustment.

Applications

• PCI Express Gen 1/2/3/4 Common Clock and SRNS
• Ethernet Switches and Routers (1 GbE/10 GbE)
• Telecom Line Cards and MSAN/DSLAM/PON Systems
• FPGA and Processor Clocking

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure that the selected part number matches the required configuration file generated by ClockBuilder Pro software. Cross-reference the datasheet revision date to confirm compliance with current RoHS directives and material declarations.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source. Verify that the target output signal format (e.g., LVDS vs. CMOS) and voltage levels are supported by the specific driver pins. Confirm that the input reference frequency falls within the supported ranges for the chosen mode, whether using an external crystal or a high-frequency differential input.

Part Context

The Si5338 series replaces discrete oscillators in complex digital systems. This specific model belongs to the Si5338 family, which is designed for high-performance timing applications requiring low jitter and high configurability. It serves as a central timing hub for data communication and computing infrastructure.

Replacement Considerations

Direct pin-to-pin replacements within the same family may require reprogramming the internal configuration registers. Verify that alternative part numbers support the exact same output drive strengths and voltage levels required by the destination devices.