SIT92216AI-X

Clock Buffers, Drivers Overview

The SiT92216AI-X is a high-performance clock fan-out buffer featuring four differential outputs and one LVCMOS output. It supports input frequencies up to 2100 MHz with an additive jitter performance of 50 fs RMS. The device operates on independent core (VCC) and output (VCCO) supplies, supporting 3.3 V, 2.5 V, and 1.8 V levels for specific drivers. It includes a 3:1 input multiplexer accepting primary, secondary, or crystal sources. Packaged in a 32-pin, 5 mm x 5 mm QFN, it is designed for low-jitter, high-frequency clock distribution in demanding environments.

Clock Buffers, Drivers Feature Summary

• Ultra-low additive jitter of 50 fs RMS across differential and LVCMOS outputs.
• Supports input frequencies from DC to 2100 MHz via primary, secondary, or crystal inputs.
• Features four differential outputs (LVPECL, LVDS, HCSL) and one LVCMOS output.
• Independent power supply domains allowing flexible voltage translation (3.3 V, 2.5 V, 1.8 V).

Clock Buffers, Drivers Applications

• Carrier Ethernet infrastructure
• 5G Wireless Base Stations and Small Cells
• PCI Express Gen1 through Gen5 systems

Clock Buffers, Drivers Procurement Notes

Verify the specific suffix 'AI-X' against the manufacturer's official ordering guide to confirm temperature range, package variant, and factory programming options. Ensure the selected configuration matches the required input/output signaling types and voltage levels for the target application design.

Clock Buffers, Drivers Selection Notes

Select this component for applications requiring high-frequency clock distribution with minimal added jitter. Ensure the design accommodates the 32-pin QFN package dimensions and provides adequate thermal dissipation. Verify that the system power rails support the independent VCC and VCCO requirements for the chosen output driver modes.

Clock Buffers, Drivers Part Context

The SiT92216 belongs to SiTime’s family of ultra-low jitter clock buffers. It is engineered to replace traditional quartz-based buffering solutions in high-speed digital systems. The device integrates multiple output driver types into a single package, simplifying board layout and reducing component count for complex clock trees.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer for direct replacements or cross-reference based on pin compatibility and electrical specifications.

Clock Buffers, Drivers FAQ

What is the maximum input frequency supported by the SiT92216?

The SiT92216 supports input frequencies ranging from DC to 2100 MHz on its primary and secondary differential inputs.

Can the SiT92216 operate with a crystal input?

Yes, the device features a dedicated crystal input (OSCIN) that can drive a crystal oscillator or accept an external XO/TCXO signal in bypass mode.

What output driver types are available on the SiT92216?

The device provides four differential output banks configurable as LVPECL, LVDS, or HCSL, along with one LVCMOS output.