The 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 80% 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.

16 frequencies
Frequency Stability (ppm)
75, 100, 250
300mV to 700mV, full swing LVCMOS
Operating Temperature Range (°C)
-10 to +70, -40 to +85
Oscillator Type
Hz to kHz XO
Output type
LVCMOS, NanoDrive™
Package Type (mm²)
1.5x0.8, 2.0x1.2
Hz to kHz frequencies
Voltage Supply (V)
1.2 to 3.63
  • Wireless mouse
  • Wireless keypads
  • Pulse-per-second (PPS) timekeeping
  • RTC reference clock
  • Battery management timekeeping


Features & Benefits

Factory programmable down to 1 Hz

  • Significantly reduces power compared to fixed 32.768 kHz XTAL

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

  • Saves board space by up to 80% compared to the 2012 SMD

Small SMD package: 2.0 x 1.2 mm (2012)

  • Pin-compatible to 2012 XTAL SMD

NanoPower: 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 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 any external capacitors
  • Eliminates load dependent startup 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


Quality Documents

Additional Resources