SiTime, Silicon MEMS Oscillators and Clock Generators

SiT8209: High Frequency Ultra Performance Oscillator

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The SiT8209 is a high frequency, ultra performance oscillator for telecom, networking, storage and wireless applications.  It is the industry's first MEMS  oscillator to deliver 500 femtoseconds of typical integrated RMS phase jitter (12 kHz to 20 MHz) and ± 10 PPM frequency stability across all temperature ranges. This device has a rich set of configurable features such as any frequency between 80 to 220 MHz and is available with extremely short lead time to ensure the fastest time-to-market. With SoftEdge™ technology EMI reduction, the SiT8209 improves system perfermance. The SiT8209 is 100% compatible with legacy quartz, SAW and overtone oscillators in footprint and package, and replaces these devices without any design changes.



Frequency Range (MHz) 80.000001 to 220
Frequency Stability (PPM) ±10, ±20, ±25, ±50
RMS Integrated Phase Jitter (12kHz - 20MHz) <1ps
SoftEdgeTM  Rise/Fall Time Control
1ns - 4ns
Temp Range (°C) -20 to +70, -40 to +85
Supply Voltage (V) 1.8, 2.5 - 3.3 (continuous)
Package LxWxH (mm) 2.5x2.0, 3.2x2.5x0.75, 5.0x3.2x0.75, 7.0x5.0x0.9
Status Production
  • Computer servers
  • Storage servers
  • Raid controllers
  • Routers
  • Switches
  • Telecom equipment
  • Fiberchannel
  • Ethernet
  • 10 Gigabit Ethernet
  • DDR

Features Benefits
  • <1ps RMS integrated phase jitter (12 kHz to 20 MHz)
  • Great jitter margin for the most stringent applications such as SONET
  • Excellent frequency stabiliy, as low as ±10 PPM
  • Better timing margin that enhances system stability and robustness
  • Extensive programmability
    • Frequency from 80.000001 to 220
    • Supply voltage of 1.8V, 2.5V to 3.3V
    • Frequency stability from ±10PPM to ±50PPM
  • Customized specification for optimal system performance
  • Easy availability of any device specifications within the operating range
  • Configurable drive strength using SoftEdge technology
  • Slower rise/fall time that minimizes EMI from the oscillator
  • Saves cost by driving multiple loads and eliminate additional timing components
  • Three industry standard packages
  • 100% drop in replacement for quartz VCXO without any design changes
  • 3-5 week lead time
    • Any frequency
    • Any voltage
    • Any package
  • Reduce inventory overhead
  • Mitigate shortage risks


Measured Performance Reports on SiT8209

The following reports contain details of actual measurements on SiTime devices at the frequencies mentioned below and are intended to supplement the datasheet. Measurement conditions and equipment are specified in the individual files. If you desire a more detailed report than the ones provided below, please contact your local SiTime sales representative or email salessupport@sitime.com.

icon 100 MHz LVCMOS (139.6 kB) icon 133.33 MHz LVCMOS (145.05 kB)
icon 106.25 MHz LVCMOS (142.82 kB) icon 155.52 MHz LVCMOS (140.36 kB)
icon 125 MHz LVCMOS (143.38 kB) icon 156.25 MHz LVCMOS (140.64 kB)


Subject to change without notice



[1] Contact SiTime for different drive strength options for driving higher loads or reducing EMI


1.8V LVCMOS IBIS iconSiT8209_1v8v
2.5V LVCMOS IBIS iconSiT8209_2v5v
2.8V LVCMOS IBIS iconSiT8209_2v8v
3.3V LVCMOS IBIS icon SiT8209_3v3v