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

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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.

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

View related products: 220 to 625 MHz | 0.23 ps phase jitter | XO lineup


Industry standard packages for drop-in replacement of quartz oscillators without any board changes
"Specs" "Value"
Frequency 1 to 220 MHz
Frequency Stability (ppm) ±10, ±20, ±25, ±50
Operating Temperature Range (°C) -20 to +70, -40 to +85
Package Type (mm²) 3.2x2.5, 5.0x3.2, 7.0x5.0
Oscillator Type XO-DE
Phase Jitter (rms) 0.6 ps
Voltage Supply (V) 2.5, 3.3, 2.25 to 3.63
Features Field programmable
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
  • Commercial Security
  • Medical Electronics
  • Test & Measurement
  • Railroads

Eval Boards (Contact SiTime) – SiT6097 (3225) | SiT6086 (5032) | SiT6085 (7050)

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

Time Machine II Programmer – Program frequency, voltage, stability & more

Reliability Calculator – Get FIT/MTBF data for various operating conditions

Jitter Calculator and Plots – Convert phase noise to phase jitter, find phase noise plots

5032 6-Pins 7050 6-Pins – Preview packages with QFN 3D step models

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Step 1: Configure SiT9121 Part Number
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QuantityUnit Price
199---
100-499---
500-999---
1,000-4,999---
> 4,999---