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SIT9120AI-2C3-33E100.000000

SIT9120AI-2C3-33E100.000000

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

The SIT9120AI-2C3-33E100.000000 is a high-performance 100 MHz differential LVDS oscillator based on SiTime's silicon MEMS technology. It provides a stable clock source for high-speed networking and computing applications, operating at 3.3V within a 5.0mm x 3.2mm surface-mount package. This MEMS-based resonator offers superior reliability and resistance to mechanical shock and vibration compared to traditional quartz oscillators.

Why Choose This Part

The SiT9120 offers excellent frequency stability of +/-50ppm across an industrial temperature range of -40C to +85C. Its LVDS output ensures low electromagnetic interference (EMI) and high noise immunity for signal integrity in dense PCB layouts. Being a MEMS device, it eliminates 'activity dips' and provides much better robustness against mechanical stress than quartz-based alternatives.

Applications

10GbE / 40GbE / 100GbE Ethernet
Provides the low-jitter reference clock required for high-speed network interface cards and switches.
PCI Express (PCIe) Clocking
Used as a reference clock for PCIe Gen 3 and Gen 4 interfaces in server and storage environments.
FPGA Reference Clocking
Supplies a high-frequency differential clock to FPGA MGT transceivers for data serialization/deserialization.

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 +/-50ppm
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 oscillator, ensure a 0.1uF bypass capacitor is placed as close as possible to the VDD pin. The LVDS output requires a 100-ohm differential termination resistor at the receiver side for proper signal integrity. Engineers can use the SiT6012 evaluation board to characterize SiTime's 6-pin differential oscillators before finalizing the PCB layout.

Also Consider

SG-8018CE Epson - A standard quartz-based programmable oscillator if a CMOS output is preferred over LVDS.