Ultra-Small µPower, 32.768 kHz Quartz XTAL Replacement


The 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.

View related products: 1 to 32.768 kHz2012 packageHigh temp | 4 ns phase jitter±50 ppm | 32 kHz lineup

World's smallest oscillator in tiny 1508 chip-scale package, consumes only 1.2 mm2 board space
"Specs" "Value"
Frequency 32.768 kHz
Frequency Stability (ppm) 75, 100, 250
Operating Temperature Range (°C) -10 to +70, -40 to +85
Package Type (mm²) 1.5x0.8
Oscillator Type 32kHz XO
NanoDrive™ 300mV to 700mV, full swing LVCMOS
Voltage Supply (V) 1.2 to 3.63
Features Smallest size
Availability Production

Smallest footprint in chip-scale (CSP)

  • 1.5 x 0.8 mm: Saves board space

Nano-Power: 900 nA (typ.)

  • Extends battery life

Operates down to 1.2 V

  • Supports coin-cell or supercap battery-backup

NanoDrive™ reduced swing oscillator output

  • Directly interfaces to XTAL IN pin (Oscillator input)
  • Programmable output swing minimizes power
  • Oscillator output eliminates load capacitors

No load or VDD filter capacitors

  • Eliminates all external capacitors
  • Eliminates load-dependent startup 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


  • Smartphones
  • Tablets
  • Health & Wellness Monitors
  • Fitness Watches
  • Sport Video Camcorders
  • Wireless Keypads
  • Ultra-small Laptops
  • RTC Reference Clocks
  • Medical Monitoring
  • Battery Management Timekeeping
  • Retail Electronics
  • Seismic Sensors
  • Long-range Communications
  • Asset Tracking
  • Smart Agriculture
  • Smart City
  • Smart Watches
  • Fitness Trackers
  • Mobile Accessories
  • Glasses
  • Consumer Electronics
  • AR / VR
  • Smart Home

SiT6098 (1508) Evaluation Board User Manual – Evaluate device performance

Reliability Calculator – Get FIT/MTBF data for various operating conditions

CSP 1508 4-Pins 3D Step Model – Preview oscillator packages in 3D

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