SiTime's TempFlat MEMS technology enables the first 32 kHz TCXO in a 1.2mm2 chip-scale package, the world's smallest footprint. Typical core supply current is only 1 μA.  And unlike standard oscillators, the SiT1552 features NanoDrive™, a factory-programmable output that reduces voltage swing to minimize power. The SiT1552 is factory calibrated over multiple temperature points to guarantee extremely tight frequency stability from ±10 ppm to ±20 ppm (initial and over temperature).

Video Demo: The SiT1552 is placed in temperature chamber that increases temp. from < -40 to +85 °C at a fast ramp rate of 4 degrees per second.


32.768 kHz
Frequency Stability (ppm)
±5, ±10, ±20
300mV to 700mV, full swing LVCMOS
Operating Temperature Range (°C)
-0 to +70, -40 to +85
Oscillator Type
32kHz TCXO
Output type
LVCMOS, NanoDrive™
Package Type (mm²)
Smallest size
Voltage Supply (V)
1.5 to 3.63
  • Smart meters (AMR)
  • Health and wellness monitors
  • Pulse-per-second (PPS) timekeeping
  • Medical electronics
  • Retail electronics
  • Long-range communications
  • Machine to machine (M2M)
  • Asset tracking
  • Smart farming
  • Smart city
  • Smartwatch
  • Fitness tracker
  • Home appliances


Features & Benefits

±10 ppm all-inclusive frequency stability

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

Smallest footprint in chip-scale (CSP)

  • 1.5 x 0.8 mm: Saves board space

NanoPower: 990 nA (typ.)

  • Maximizes battery life

NanoDrive™ reduced swing oscillator output

  • Programmable output swing minimizes power

Internal VDD supply filtering

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


Quality Documents

Additional Resources