SiTime, Silicon MEMS Oscillators and Clock Generators

SiT1532 Ultra-Small 32 kHz Oscillator

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ace awards 2014The SiT1532 is the world's smallest, lowest power 32 kHz oscillator optimized for mobile and other battery-powered applications. SiTime's silicon MEMS technology enables the smallest footprint and chip-scale packaging. This device reduces the 32 kHz footprint by as much as 85% compared to existing 2.0 x 1.2 mm SMD XTAL packages. Unlike XTALs, the SiT1532 oscillator output enables greater component placement flexibility and eliminates external load capacitors, thus saving additional component count and board space. And unlike standard oscillators, the SiT1532 features NanoDrive™, a factory programmable output that reduces the voltage swing to minimize power.




Frequency (kHz) 32.768
Frequency Tolerance 10 PPM
Temp Range (°C) -10 to +70, -40 to +85
Supply Voltage (V) 1.2 - 3.63
NanoDrive™ Reduced Swing Programmable Output Range 300mV to 700mV, and full swing LVCMOS
Package LxWxH (mm) 1.5 x 0.8 x 0.6
Status Production
  • Smartphones
  • Tablets
  • Health and Wellness Monitors
  • Fitness Watches
  • Sport Video Camcorders
  • Wireless Keypads
  • Ultra-Small Notebook PC 
  • RTC reference Clock
  • Medical Monitoring
  • Battery Management Timekeeping

Features Benefits
  • Smallest footprint in chip-scale (CSP): 1.5 x 0.8mm
  • Saves board space
  • Ultra-low power: 900nA (typ)
  • Extends battery life
  • Operates down to 1.2V
  • Supports coin-cell or supercap battery-backup
  • NanoDrive™ reduced swing oscillator output
  • Directly interfaces to XTAL IN pin (Oscillator input)
  • Programmable ouput swing minimizes power
  • Osciilator output eliminates load capacitors
  • No load or Vdd filter capacitors
  • Eliminates all external capacitors
  • Eliminates load-dependent start-up issues common with quartz XTAL
  • <100 PPM frequency stability over -40°C to +85°C temp range
  • 2x better stability compared to quartz
  • Improves wireless connectivity and RTC accuracy


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



If you do not know the output voltage requirements to define the proper NanoDrive settings, we recommend the default setting for initial evaluation.

DC-Coupled Receiver
VOH = 1.1V
VOL = 0.4V