1 to 220 MHz, ±10 to ±50 ppm Digitally-controlled XO

The SiT3907 is a highly flexible, high performance DCXO with LVCMOS/LVTTL compatible output. This programmable device supports any frequency, 1-220 MHz, along with any combination of voltage (1.8 V; 2.5 V to 3.3 V), pull range (±25 ppm to ±200 ppm) and package (3225, 5032, 7050). It enables frequency tuning via a unique one-wire interface, eliminating frequency drift that is caused by board noise and simplifying PLL and clock synchronization design. It comes in 3 industry-standard package sizes, 4-pin 3.2x2.5 mm, and 6-pin 5.0x3.2 or 7.0x5.0 mm.

Three industry standard footprints for drop-in replacement of quartz VCXOs with minor design modification
Oscillator Type DCXO-SE
Frequency 1 to 220 MHz
Frequency Stability (ppm) ±10, ±25, ±50
Phase Jitter (rms) 0.6 ps
Output Type LVCMOS
Operating Temperature Range (°C) -20 to +70, -40 to +85
Pull Range (ppm) ±25, ±50, ±100, ±200, ±400, ±800, ±1600
FlexEdgeTMRise/Fall Time Yes
Voltage Supply (V) 1.8, 2.5, 2.8, 3.3
Package Type (mm²) 3.2x2.5, 5.0x3.2, 7.0x5.0
Features Digitally controlled, Field Programmable
Availability Production
  • Digitally controlled 1 ppb frequency pull resolution
  • Frequency from 1 MHz to 220 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:
  • Eliminating a need for external DAC
  • Customized specification for optimal system performance
  • Easy availability of any device specifications within the operating range

One-wire digital frequency tuning

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

Three industry-standard packages

  • Minor modification to existing design using VCXO to adopt the DCXO;

4 to 6 weeks lead time

  • Reduce inventory overhead
  • Mitigate shortage risks

  • Timing servers
  • 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

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Evaluation Boards (Contact SiTime)– SiT6082 (3225) | SiT6083 (5032) | SiT6084 (7050)

Reliability CalculatorGet FIT/MTBF data for various operating conditions

Frequency Slope (dF/dT) Calculator– Calculate frequency slope over temperature

QFN 3225 4-Pins|QFN 5032 6-Pins|QFN 7050 6-Pins– Preview packages withQFN3D step models

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坐3907 (LVCMOS, 2.5 V) IBIS Models
坐3907 (LVCMOS, 2.8 V) IBIS Models
坐3907 (LVCMOS, 3.3 V) IBIS Models
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MEMS-Based Resonators and Oscillators are Now Replacing Quartz Presentations
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坐3907 Datasheet Datasheets
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J-AN10002 シングルエンド発振器の推奨終端方法 Application Notes
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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
坐ime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
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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
J-AN10041 DCXO SiT39xxシリーズを使った設計 Application Notes
AN10041 Designing with the SiT39xx Family of DCXOs (Digitally Controlled Oscillators) Application Notes
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Resilience and Reliability of Silicon MEMS Oscillators Technology Papers
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坐ime's MEMS First™ and EpiSeal™ Processes Technology Papers
The top 8 reasons to use an oscillator instead of a crystal resonator White 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
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
坐ime MEMS Oscillators - Revolutionizing the Timing Market (Download MP4 Video) Videos
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QFN 3225 4-Pins 3D Step Models
QFN 5032 6-Pins 3D Step Models
QFN 7050 6-Pins 3D Step Models
坐ime MEMS Timing Solutions (8.5x11) Brochures/Fliers
坐ime MEMS Timing Solutions (A4) Brochures/Fliers
坐ime MEMS Timing Solutions (A4) Chinese Brochures/Fliers
Silicon Replaces Quartz (Japanese Subtitles) Videos
Silicon Replaces Quartz (Chinese Subtitles) Videos
坐ime MEMS First 工艺 Technology Papers