Silicon Oscillators (XOs)

Silicon Labs silicon oscillators provide comparable performance to similar crystal oscillators. By leveraging innovative stabilization circuitry, silicon oscillators eliminate the need to use a mechanical resonator (quartz, MEMs, or SAW) and can exceed jitter performance typically suited for high-volume applications. This technology uses a standard CMOS IC manufacturing flow to enable short lead times for any frequency oscillator between 0.9 and 200 MHz. This simplified process flow also enables very cost-effective solutions, especially for applications that require higher frequencies and differential formats (LVPECL, LVDS, and HCSL).


  • Quartz-free, all-silicon oscillator
  • Generates any frequency from 0.9 to 200 MHz
  • Low jitter: 1.5 ps RMS phase jitter, 2 ps RMS period jitter (max)
  • Wide selection of output formats: CMOS, LVPECL, LVDS, HCSL, and SSTL
  • Driver stopped, tristate and power down options available on OE pin
  • Footprint-compatible with 3.2 mm x 5.0 mm layout
  • Small package: 3.2 mm x 4.0 mm DFN
  • 0 to +70 °C operating temperature range
  • Low-voltage operation: 3.3, 2.5, and 1.8 V
  • Low core power: 8 mA

Getting Started with Silicon XOs

Si50x-32x4-EVB Development Kit

The easiest way to begin development with the silicon oscillator family is with the Si500 Silicon Oscillator Development Kit.

View Kit

Silicon XO Product Matrix

Part Number Customize Data Sheet Development Kit Description Frequency Range (MHz) Output Format(s) Phase Jitter (RMS) (ps) Period Jitter (RMS) (ps) Stability (+/- ppm) Supply Voltage (V) Temperature Range (ºC) Package Size (mm) OE (active high)
Customize Si50x-32x4-EVB Silicon Osc; Diff; 0.9-200 MHz 0.9 200 LVPECL; LVDS; HCSL; dual output CMOS; diff CMOS; dual output SSTL; diff SSTL 5 1 150; 250 1.8; 2.5; 3.3 0 85 3.2x5 Pin 1
Customize Si50x-32x4-EVB Silicon Osc; Single-Ended; 0.9-200 MHz 0.9 200 CMOS; SSTL 5 1 150; 250 1.8; 2.5; 3.3 0 85 3.2x5 Pin 1
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