SiTime, Silicon MEMS Oscillators and Clock Generators

SiT1552 Ultra-Small, Precision 32 kHz TCXO

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SiT1552 Ultra-Small, Precision 32 kHz TCXO

SiTime's silicon MEMS technology enables the first 32kHz TCXO in the world's smallest footprint and chip-scale packaging (CSP). Typical core supply current is only 1μA.  And unlike standard oscillators, the SiT1552 features NanoDrive™, a factory programmable output that reduces the voltage swing to minimize power. The SiT1552 is factory calibrated over multiple temperature points to guarantee extremely tight frequency stability over temperature, with stability options from ±5 ppm to ±20 ppm.

Video Demo: Watch dynamic frequency over temperature of the SiT1552. Device is placed in temperature chamber that increases temperature from less than -40 to +85C at a fast ramp rate of 4 degrees per second.




Frequency (kHz) 32.768
Frequency Stability Over Temperature (PPM)
±5, ±10, ±20
Temp Range (°C) 0 to +70, -40 to +85
Supply Voltage (V) 1.5 to 3.63
NanoDrive™ Reduced Swing Programmable Output Range 200 mV to 800 mV or rail-to-rail LVCMOS
Package LxWxH (mm) 1.5 x 0.8 x 0.6
Status Production
  • Smart Meters (AMR)
  • Health & Wellness Monitors
  • Pulse-per-Second Timekeeping

Features Benefits
  • ±5 ppm frequency stability over temperature
  • 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
  • Ultra-low power: 990 nA (typ)
  • Maximizes battery life
  • NanoDrive™ reduced swing oscillator output
  • Programmable ouput swing minimizes power
  • Internal VDD supply filtering
  • Eliminates external VDD bypass capacitor to maintain ultra-small footprint



Part number characters in blue represent the customer specific options. The other characters in the part number are fixed.