1 to 220 MHz, ±10 to ±50 ppm Differential XO

The SiT9121 is a highly flexible, programmable differential oscillator that supports LVPECL and LVDS output signaling types. This differential oscillator covers any frequency between 1 to 220 MHz, with RMS phase jitter of 0.6 ps (typ.). Unlike quartz or SAW based traditional oscillators, the SiT9121 is available in any combination of voltage (2.5V to 3.3V), frequency stability (±10, ±20, ±25, and ±50 ppm) and package (3225, 5032, 7050) options.

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Industry standard packages for drop-in replacement of quartz oscillators without any board changes
Oscillator Type XO-DE
Frequency 1 to 220 MHz
Frequency Stability (ppm) ±10, ±20, ±25, ±50
Operating Temperature Range (°C) -20 to +70, -40 to +85
Output type LVPECL, LVDS
Package Type (mm²) 3.2x2.5, 5.0x3.2, 7.0x5.0
Phase Jitter (RMS) 0.6 ps
Features Field programmable
Voltage Supply (V) 2.5, 3.3, 2.25 to 3.63
Availability Production

0.6 ps integrated RMS phase jitter (12 kHz to 20 MHz)

  • Excellent jitter margin for the most stringent applications such as SONET

Excellent frequency stability, as low as ±10 PPM

  • Better timing margin that enhances system stability and robustness
     
  • Extensive programmability 
  • Frequency from 1 to 220 MHz
  • LVPECL and LVDS output signaling types
  • Supply voltage of 2.5V and 3.3V
  • Frequency stability from ±10 PPM to ±50 PPM
    • Customized specifications for optimal system performance 
    • Easy availability of any device specification within the operating range

Three industry standard packages

  • 100% drop in replacement for quartz, SAW and overtone oscillators without any design changes

4 to 6 weeks lead time 

  • Any frequency
  • Any voltage
  • Any package
  • Reduce inventory overhead
  • Mitigate shortage risks
  • 1Gb to 10Gb Ethernet
  • PCIe
  • FPGA
  • SATA/SAS
  • Fibre channel
  • System clocking
  • CPE & Home Gateway
  • Precision GNSS
  • GPS/GNSS Modules
  • Factory automation
  • Security & surveillance
  • Medical electronics
  • Test and measurement
  • Defense & aerospace
  • Railroads

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J-AN10033 発振器の周波数測定ガイドライン Application Notes
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SC-AN10007 时钟抖动定义与测量方法 Application Notes
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SiTime MEMS First 工艺 Application Notes
Timing Solutions for Communications & Enterprise MEMS Timing Solution Brochures/Fliers
Phase Noise Measurement Tutorial Videos
Phase Noise Measurement Tutorial (Download MP4 Video) Videos
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Advantages of MEMS Timing - Parameters (Download MP4 Video) Videos
Silicon Replaces Quartz (Chinese Subtitles) (Download MP4 Video) Videos
Silicon Replaces Quartz (Japanese Subtitles) (Download MP4 Video) Videos
SiTime MEMS Oscillators - Revolutionizing the Timing Market (Download MP4 Video) Videos
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Jitter Part 2: Phase Noise and Phase Jitter (Download MP4 Video) Videos
Jitter Part 3: C2C Jitter and Long Term Jitter (Download MP4 Video) Videos
Jitter Part 1: Principles and Practice with an Overview of Period Jitter Videos
Jitter Part 2: Phase Noise and Phase Jitter Videos
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