SIT3809

The SiT3809 is a highly flexible high-frequency MEMS voltage-controlled oscillator (VCXO) with LVCMOS output. This device supports any combination of frequencies (80.000001 to 220 MHz), voltage (1.8 V; 2.5 V to 3.3 V), pull range (±25 ppm to ±1600 ppm) and package (2520, 3225, 5032, 7050). It provides superior pull range linearity and tuning slope consistency (Kv), 10 times better than quartz VCXOs, which results in a simpler PLL and clock synchronization design. The SiT3809 is 100% compatible with legacy quartz devices in footprint and control voltage and therefore replaces crystal VCXO oscillators without any design changes.

Specifications

Features

xtensive programmability

• Frequency from 80 MHz to 220 MHz
  
• Supply voltage of 1.8 V; 2.5 V to 3.3 V
  
• Frequency stability from ±10 ppm to ±50 ppm
  
• Pull range from ±25 ppm to ±1600 ppm:
  
• Customized specification for optimal system performance
  
• Readily available products in any specification within the operating range
  

<1% pull range linearity

• Simpler loop control in software controlled system PLL
  
• More consistent PLL bandwidth over operating range
  
• Faster calibration and lock time
  
• Reduction of modulation harmonics
  

Superior tuning slope consistency

• Tighter PLL bandwidth and simpler system design
  

Four industry-standard packages

• 100% drop-in replacement for quartz VCXO without any design changes
  

4 to 6 weeks lead time

• Reduce inventory overhead
  
• Mitigate shortage risks