SiTime's TempFlat MEMS™ technology enables the first 32 kHz ±50 ppm oscillator in an ultra-small 1.2mm2 chip-scale package. Typical supply current is only 4.5 μA and guarantees ±50 ppm all-inclusive frequency stability. 


32.768 kHz
Frequency Stability (ppm)
Operating Temperature Range (°C)
-20 to +70, -40 to +85
Oscillator Type
32kHz XO
Output type
Package Type (mm²)
Ultra-low power
Voltage Supply (V)
1.62 to 3.63
  • Wireless connectivity sleep clock
  • Health and wellness monitors
  • ULP input devices
  • RTC reference clock
  • Portable data loggers
  • Portable medical devices
  • Smart meters (AMR)
  • Retail electronics
  • Remote sensing
  • Machine to machine (M2M)
  • Smartphone
  • Smart watches
  • Fitness tracker
  • Data connectivity
  • Mobile accessories
  • Glasses
  • Tablets
  • Consumer electronics


Features & Benefits

±50 ppm all-inclusive frequency stability

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

  • Improved system error budget

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

  • Saves board space

Ultra-low power: 4.5 µA (typ.)

  • Maximizes battery life

Low jitter: 4 nsRMS integrated phase jitter (IPJ)

  • Suitable for audio applications

Internal VDD supply filtering

  • Eliminates external VDD bypass capacitor to maintain ultra-small footprint

Drives multiple loads

  • Eliminates multiple discrete XTALs and load caps

Quality Documents

Additional Resources