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SIT9121AI-2C2-33E100.000000

SIT9121AI-2C2-33E100.000000

SiTime
100 MHz XO (Standard) LVDS Oscillator 3.3V Enable/Disable 6-SMD, No Lead
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Overview

The SIT9121AI-2C2-33E100.000000 is a high-performance 100 MHz MEMS oscillator featuring an LVDS output for low-noise differential signaling. Operating at 3.3V, this device provides a stable frequency reference with +/-25ppm stability across a wide industrial temperature range of -40C to +85C. Its MEMS-based architecture offers superior reliability and resistance to shock and vibration compared to traditional quartz resonators.

Why Choose This Part

This oscillator utilizes SiTime's silicon MEMS technology to deliver excellent frequency stability and high reliability in a standard 5.0mm x 3.2mm package. The LVDS output ensures low electromagnetic interference (EMI) and high noise immunity for high-speed data paths, while the 3.3V supply and enable/disable function simplify power management in complex systems.

Applications

10GbE Networking
Provides a low-jitter 100 MHz reference clock for high-speed Ethernet physical layer transceivers.
FPGA Clocking
Serves as a differential system clock for high-performance FPGAs requiring LVDS levels for noise immunity.
PCI Express Timing
Acts as a stable frequency source for PCIe Gen 1/2/3 interface clocking in industrial computing environments.

Key Specifications

Type XO (Standard)
Output LVDS
Function Enable/Disable
Frequency 100 MHz
Mounting Type Surface Mount
Base Resonator MEMS
Package / Case 6-SMD, No Lead
Size / Dimension 0.197" L x 0.126" W (5.00mm x 3.20mm)
Voltage - Supply 3.3V
Frequency Stability +/-25ppm
Height - Seated (Max) 0.031" (0.80mm)
Operating Temperature -40degC ~ 85degC
Current - Supply (Max) 55mA
Supplier Device Package 6-SMD (5x3.2)

Getting Started

To integrate this component, ensure the LVDS output is terminated with a 100-ohm differential resistor at the receiver side. Follow standard high-speed PCB layout practices, including controlled impedance traces and localized decoupling capacitors between the 3.3V VDD and ground pins. The enable/disable pin can be tied to VDD for continuous operation or controlled by a GPIO to save power during system standby.

Categories

Clocks & Timing > Crystal Oscillators