1 to 80 MHz, ±10 to ±50 ppm VCXO

The SiT3808 is the most flexible LVCMOS/LVTTL compatible voltage-controlled oscillator (VCXO) on the market. The device supports any combination of frequencies (up to 80 MHz), voltage (1.8 V; 2.5 V to 3.3 V), pull range (±25 ppm to ±1600 ppm) and package (2520, 3225, 5032, 7050). It provides superior pull range linearity and tuning slope consistency (Kv), 10 times better than quartz crystal VCXOs, thereby simplifying PLL and clock synchronization design. The SiT3808 is 100% compatible with legacy quartz devices in footprint and control voltage and therefore replaces crystal VCXO oscillators without any design changes.

Program oscillators to get instant samples, optimized performance, and fast prototyping | Learn More

 

Four industry standard footprints for drop-in replacement of quartz VCXOs without any board changes
Oscillator Type VCXO-SE
Frequency 1 to 80 MHz
Frequency Stability (ppm) ±25, ±50
Operating Temperature Range (°C) -20 to +70, -40 to +85
Output type LVCMOS
Package Type (mm²) 2.5x2.0, 3.2x2.5, 5.0x3.2, 7.0x5.0
Phase Jitter (RMS) 0.5 ps
Features Low Jitter, Field Programmable
Voltage Supply (V) 1.8, 2.5, 2.8, 3.3
Pull Range (ppm) ±25, ±50, ±80, ±100, ±150, ±200
FlexEdgeTM Rise/Fall Time Yes
Availability Production

Extensive programmability

  • Frequency from 1 MHz to 80 MHz
  • Supply voltage of 1.8 V; 2.5 V to 3.3 V
  • Frequency stability from ±10 ppm to ±50 ppm
  • Pull range from ±25 ppm to ±1600 ppm:
  • Customized specification for optimal system performance
  • Readily available products with any specification within the operating range

< 1% pull range linearity

  • Simpler loop control in software controlled system PLL
  • More consistent PLL bandwidth over operating range
  • Faster calibration and lock time
  • Reduction of modulation harmonics

Superior tuning slope consistency

  • Tighter PLL bandwidth and simpler system design

Four industry-standard packages

  • 100% drop-in replacement for quartz VCXO without any design changes

4 to 6 weeks lead time

  • Reduce inventory overhead
  • Mitigate shortage risks

 

  • Telecom equipment
  • Wireless base stations
  • Networked video systems and digitizers
  • Set-top boxes (STB)
  • Jitter cleaner
  • Networked audio systems
  • Instrumentation
  • Low-bandwidth analog phase locked loop (PLL)
  • FPGA data recovery
  • Audio & video

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Resource Name Type
Silicon MEMS Reliability and Resilience Presentations
Performance Comparison: Silicon MEMS Verses Quartz Oscillators Presentations
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MEMS-Based Resonators and Oscillators are Now Replacing Quartz Presentations
Getting In Touch with MEMS: The Electromechanical Interface Presentations
Field Programmable Oscillators Datasheet Datasheets
SiT3808 Datasheet Datasheets
J-AN10002 シングルエンド発振器の推奨終端方法 Application Notes
AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
J-AN10006 発振器のPCBデザインのガイドライン Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10007 Clock Jitter Definitions and Measurement Methods Application Notes
J-AN10007 クロックジッタの定義と測定方法 Application Notes
J-AN10020 VCXOの仕様定義 Application Notes
AN10020 Definitions of VCXO Specifications Application Notes
J-AN10021 PLL設計におけるVCXO性能のトレードオフ Application Notes
AN10021 VCXO Parameter Trade-offs for PLL Design Application Notes
SiTime発振器の信頼性計算方法 Technology Papers
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
J-AN10028 プローブを使用した発振器の出力波形計測方法 Application Notes
AN10028 Probing Oscillator Output Application Notes
MEMSおよび水晶ベース発振器の電磁場感受率の比較 Technology Papers
Electromagnetic Susceptibility Comparison of MEMS and Quartz-based Oscillators Technology Papers
MEMS発振器と水晶発振器の性能比較(耐衝撃と耐振動) Technology Papers
Shock and Vibration Comparison of MEMS and Quartz-based Oscillators Technology Papers
J-AN10033 発振器の周波数測定ガイドライン Application Notes
AN10033 Frequency Measurement Guidelines for Oscillators Application Notes
シリコンMEMS発振器の耐性および信頼性 Technology Papers
Resilience and Reliability of Silicon MEMS Oscillators Technology Papers
SiTimeの MEMS First™ プロセス技術 Technology Papers
SiTime's MEMS First™ and EpiSeal™ Processes Technology Papers
MEMS Resonator Advantages - How MEMS Resonators Work Part 2 Presentations
How to Measure Long-term Jitter and Cycle-to-cycle Jitter in Precision Timing Applications Presentations
Silicon MEMS Oscillator Frequency Characteristics and Measurement Techniques Presentations
AN10052 IEEE 1588 Precision Time Protocol (PTP) in ITU-T Standards Application Notes
SC-AN10007 时钟抖动定义与测量方法 Application Notes
SC-AN10033 振荡器频率测量指南 Application Notes
SiTime MEMS First 工艺 Application Notes
AN10062 Phase Noise Measurement Guide for Oscillators Application Notes
Phase Noise Measurement Tutorial Videos
Phase Noise Measurement Tutorial (Download MP4 Video) Videos
PCI Express Refclk Jitter Compliance using a Phase Noise Analyzer Presentations
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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SiTime's Time Machine II - Part 1: How to Install Oscillator Programming Software (Download MP4 Video) Videos
SiTime's Time Machine II - Part 2: How to Program Field Programmable Oscillators (Download MP4 Video) Videos
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SiTime MEMS Timing Solutions (A4) MEMS Timing Solution Brochures/Fliers
SiTime MEMS Timing Solutions (A4) Chinese MEMS Timing Solution Brochures/Fliers