SiTime's TempFlat MEMS™ technology coupled with our mixed signal capability enables ±50 ppm all-inclusive frequency stability in an ultra-small 1.2mm2 chip-scale package. Typical supply current is only 6.0 μA at 100 kHz and only 13 μA at 1MHz. And unlike standard oscillators, the SiT1579 is factory programmable between 1 Hz and 2.5 MHz. This unique, ultra-small oscillator enables new architectural options with its wide frequency range.  

1 Hz to 2.5 MHz
Frequency Stability (ppm)
Operating Temperature Range (°C)
-20 to +70, -40 to +85
Oscillator Type
Hz to MHz XO
Output type
Package Type (mm²)
Low jitter
Voltage Supply (V)
1.62 to 3.63
  • Health and wellness monitors
  • Analog front-end (AFE) reference clocks
  • Industrial sensors
  • Portable medical devices
  • Industrial data loggers
  • Industrial Automation
  • Industrial Logistics Trackers
  • Oil and Gas Exploration
  • Mobile accessories
  • Glasses
  • Home automation


Features & Benefits

Factory programmable frequency: 1 Hz to 2.5 MHz

  • Optimized for low-power architectural alternatives

Ultra-low power: 6.0 µA (typ.) at 100 kHz, 13 µA at 1 MHz

  • Maximizes Battery Life

Factory-programmable frequency range from 1 Hz to 2.0 MHz

  • Creates new architectural alternatives for new ultra-low power frequencies

Smallest footprint in chip-scale (CSP): 1.5 x 0.8 mm

  • Saves board space

±50 ppm frequency stability all-inclusive over temperature

  • Improved local timekeeping and improved system power with less dependency on network timekeeping updates

Quality Documents

Additional Resources