Standard Frequency ±10 to ±50 ppm Differential XO


The SiT9120 is a fixed-frequency Differential Oscillator that supports LVPECL and LVDS output signaling types. This differential oscillator covers most commonly used frequencies between 25 MHz to 212.5 MHz, with RMS phase jitter of 0.6 ps (typ.). Unlike quartz or SAW based traditional oscillators, the SiT9120 is available in any combination of voltage (2.5 V to 3.3 V), frequency stability (±10, ±20, ±25, and ±50 ppm) and package (3225, 5032, 7050) options.

Industry standard packages for drop-in replacement of quartz oscillators without any board changes
"Specs" "Value"
Frequency 31 standard frequencies
Frequency Stability (ppm) ±10, ±20, ±25, ±50
Phase Jitter (rms) 0.6 ps
Output Type LVPECL, LVDS
Operating Temperature Range (°C) -20 to +70, -40 to +85
Voltage Supply (V) 2.5, 3.3, 2.25 to 3.63
Package Type (mm²) 3.2x2.5, 5.0x3.2, 7.0x5.0
Features Field programmable
Availability Production

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

  • Excellent jitter margin for the most stringent applications such as 1 to 10GbE

Excellent frequency stability, as low as ±10 ppm

  • Better timing margin that enhances system stability and robustness
  • Extensive programmability
  • Fixed frequency between 25 to 212.5 MHz
  • LVPECL and LVDS output signaling types
  • Supply voltage of 2.5 V and 3.3 V
  • Frequency stability from ±10 ppm and ±50 ppm
  • Customized specifications for optimal system performance
  • Cost-effective
  • 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
  • Reduce inventory overhead
  • Mitigate shortage risks


  • 1Gb to 10Gb Ethernet
  • Optical modules
  • PCIe
  • FPGA
  • Fibre channel
  • System clocking
  • 无线与回程
  • 光纤、有线与 DSL
  • CPE与家庭网关
  • 安全设备
  • 服务器与存储
  • 高精度GNSS
  • GPS/GNSS modules
  • 零售电子产品
  • 远程通信
  • 智能农场
  • VR & AR
  • 个人计算
  • 音频与视频

Narrow By:

Document Name Type
4L/6L-QFN Package Composition Report (SiT820X, SiT912X, SiT50XX, SiT380X, SiT392X) Composition Reports
Electronics Industry Citizen Coalition Template Other Quality Documents
Manufacturing Notes for SiTime Products Other Quality Documents
SiTime Conflict Minerals Policy Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Warranty on Date Code Other Quality Documents
ISO9001:2015 Certificate of Registration Other Quality Documents
Conflict Minerals Reporting Template Other Quality Documents
SiTime Oscillator Reliability Report (0.18 micron CMOS process products) Reliability Reports
6L-QFN Package Qualification Report - Carsem Reliability Reports
SiT912X Product Qualification Report Reliability Reports
TSMC Wafer SGS Report RoHS/Reach/Green Certificates
Tower Jazz Wafer SGS Report RoHS/Reach/Green Certificates
4L/6L-QFN Package Homogeneous Materials and SGS Report RoHS/Reach/Green Certificates
BOSCH Wafer SGS Report RoHS/Reach/Green Certificates
SiTime Environmental Compliance Declaration RoHS/Reach/Green Certificates
Certificate of Compliance-EU RoHS Declaration RoHS/Reach/Green Certificates