SiTime's TempFlat MEMS™ technology and mixed-signal design expertise enables the first µPower TCXO in a 1.2 mm2 chip-scale package - the world's smallest footprint. Typical core supply current is only 6.0 μA at 100 kHz. And unlike standard oscillators, the SiT1576 Super-TCXO is factory-programmable between 1 Hz and 2.5 MHz. This unique, ultra-small TCXO enables new architectural options with its wide frequency range. The SiT1576 is factory-calibrated over multiple temperature points to guarantee extremely tight frequency stability as low as ±5 ppm (initial and over temperature).

Video Demo: The SiT15xx TCXO is placed in temperature chamber that increases temp. from < -40 to +85 °C at a fast ramp rate of 4 degrees per second.


1 Hz to 2.5 MHz
Frequency Stability (ppm)
±5, ±20
Operating Temperature Range (°C)
-20 to +70, -40 to +85
Oscillator Type
Hz to MHz TCXO
Output type
Package Type (mm²)
Low jitter
Voltage Supply (V)
1.62 to 3.63
  • Smart meters (AMR)
  • Health and wellness monitors
  • Analog front-end (AFE) reference clocks
  • Industrial sensors
  • Medical electronics
  • Remote sensing
  • Mobile accessories
  • Glasses


Features & Benefits

Factory programmable frequency: 1 Hz to 2.5 MHz

  • Optimized for low-power architectural alternatives

Ultra-low power: 4.5 µA (typ.) at 33 kHz, 6.0 µA (typ.) at 100 kHz

  • Maximizes battery life

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

  • Saves board space

±5 ppm all-inclusive frequency stability

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

Internal VDD supply filtering

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


Quality Documents

Additional Resources