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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.

Frequency
1 to 220 MHz
Frequency Stability (ppm)
±10, ±20, ±25, ±50
Operating Temperature Range (°C)
-20 to +70, -40 to +85
Oscillator Type
XO-DE
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
Applications
  • 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

9121

Features & Benefits

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

IBIS Models

LVDS IBIS 2.5V SIT9121 (LVDS, 2.5 V)
LVDS IBIS 3.3V SiT9121 (LVDS, 3.3 V)
LVPECL IBIS 2.5V SiT9121 (LVPECL, 2.5 V)
LVPECL IBIS 3.3V SiT9121 (LVPECL, 3.3 V)

Quality Documents

Additional Resources