SiTime, Silicon MEMS Oscillators and Clock Generators

SiT1534 Ultra-Small, Ultra-Low Power 1 Hz to 32 kHz Programmable Oscillator

E-mail Print
ace awards 2014The SiT1534 is the first programmable oscillator capable of a frequency range between 32.768 kHz down to 1 Hz for true pulse-per-second (PPS) operation. SiTime's silicon MEMS technology enables the smallest footprint and chip-scale packaging. In the chip-scale package (CSP), these devices reduce footprint by as much as 85% compared to existing 2.0 x 1.2 mm SMD XTAL packages. Unlike XTALs, the SiT1534 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 SiT1534 features NanoDrive™, a factory programmable output that reduces the voltage swing to minimize power.





Frequency Range (Hz) 16 Frequency Options from 1 to 32768 Hz
Frequency Tolerance 20 PPM
Temp Range (°C) -10 to +70, -40 to +85
Supply Voltage (V) 1.2 - 3.63
NanoDrive™ Reduced Swing Output 250mV - 1.15V
Package LxWxH (mm) CSP: 1.5 x 0.8 x 0.55, SMD: 2.0 x 1.2 x 0.6
Status Sampling
  • Wireless Mouse or Trackball
  • Wireless Keypads
  • Pulse-per-Second (pps) Timekeeping
  • RTC Reference Clock
  • Battery Management Timekeeping

Features Benef
  • Factory programmable down to 1Hz
  • Significantly reduces power compared to fixed 32.768kHz XTAL
  • Smallest footrpint in chip-scale (CSP): 1.5 x 0.8mm
  • Saves board space by up to 85% compared to the 2012 SMD
  • Small SMD package: 2.0 x 1.2mm (2012)
  • Pin-compatible to 2012 XTAL SMD
  • 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 MCU/PMIC/chipset XTAL IN
  • Programmable output swing minimizes power
  • Oscillator output eliminates load capacitor
  • No load or Vdd filtering capacitors
  • Eliminates any external capacitors
  • Eliminates load dependent start-up issues
  • <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