220 to 725 MHz, Ultra-Low Jitter, ±15 to ±50 ppm VCXO


The Endura™ SiT3343 is a programmable differential VCXO (voltage controlled oscillator), engineered for harsh environments and ideal for high-reliability aerospace and defense applications. This device supports LVPECL, LVDS and HCSL output types with 27 exceptionally linear APR (absolute pull range) options up to ±3145 ppm. The SiT3343 delivers exceptional performance of 0.21 ps jitter (typ.), ±15 ppm, and 0.1% pull range linearity, and is designed to maintain these specs in the presence of common environmental stressors, such as shock, vibration, power supply noise, and EMI.

The MEMS-based Endura SiT3343 is 100% screened through the SiTime Endura process flow to provide high reliability

The SiT3343 can be factory-programmed to any combination of frequency, stability, voltage, and pull range. This programmability enables designers to optimize clock configuration while eliminating the long lead time and customization costs associated with custom quartz VCXOs.

View related products: 1 to 220 MHz

Small industry standard package enables small form-factor system with stringent jitter requirement
"Specs" "Value"
Oscillator Type VCXO-DE
Frequency 220 to 725 MHz
Frequency Stability (ppm) ±25, ±30, ±50
Phase Jitter (rms) 0.23 ps
Operating Temperature Range (°C) -40 to +105
Spread Profile ±25, ±50, ±80, ±100, ±150, ±200, ±400, ±800, ±1600, ±3200
Voltage Supply (V) 2.5, 2.8, 3.0, 3.3
Package Type (mm²) 3.2x2.5, 5.0x3.2, 7.0x5.0
Features Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883, Ultra-Low Jitter
Availability Production

Rugged performance under airflow, fast temp. ramp

  • 0.21 ps jitter (typ.)
  • ±15 ppm
  • 0.1% pull range linearity: Ensures best system performance in hostile environments

Low acceleration sensitivity

  • As low as 0.1 ppb/g

0.05 ps/mV power supply noise rejection (PSNR)

  • Simplify power supply design

3.0 x 2.5 mm package

  • Enables small form-factor system with stringent jitter requirement

Flexible programmable features

  • 220 to 725 MHz
  • 2.25 to 3.63 V 
  • ±25 to ±3200 ppm pull range
  • LVPECL, LVDS, HCSL: Customize oscillator specifications for optimal system performance

Superior reliability

  • 1 billion hours MTBF (mean time between failure)
  • Lifetime warranty: Reduces field failures due to clock components and the repair costs
  • Airborne communications
  • Command & control
  • Land mobile radio
  • Field communications
  • UAV communications
  • Vehicle comms/telemetry
  • Airframe control
  • Engine management/control
  • Flight computer platform
  • Satellite base station
  • Ruggedized applications
  • Avionics
  • Satcom
  • GNSS/navigation

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

3225 6-Pins | 5032 6-Pins with CP – Preview packages with QFN 3D step models