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08-31-2017

SiTime Enables Industrial IoT Applications with Smallest, Lowest-Power, Precision MEMS Reference Clocks

SiTime » SiT1569, SiT1576

  • 1 Hz to 2 MHz, ideal for ultra-low-power MCUs and AFEs
  • 2 µA power, enables 10-year battery life
  • ±5 ppm, enables accurate timekeeping and lowest power
  • Smallest oscillator at 1.2 mm2, reduces footprint more than 80%

SiTime Corporation, a wholly owned subsidiary of MegaChips Corporation, introduced the SiT1569 oscillator and SiT1576 Super-TCXO with expanded frequency range. These unique timing solutions, available in a tiny CSP (chip-scale package), enable coin-cell battery operated IoT sensors to run up to 10 years. By using SiTime’s revolutionary TempFlat™ MEMS and mixed-signal technology, these devices deliver increased timekeeping accuracy and system power savings. The ultra-reliable, low-jitter SiT1576 and SiT1569 reference clocks are designed to drive microcontrollers (MCUs) and analog front end (AFE) modules in a range of portable and IoT applications such as railroad activity sensors in harsh environments, seismic sensor interface applications, and personal medical diagnostics.

SiTime - SiT1569, SiT1576

About the SiT1569 Oscillator and SiT1576 Super-TCXO

These MEMS timing solutions enable unprecedented size reduction and battery life by replacing bulky quartz oscillators that have limited frequency options, or internally-generated (MCU) power-hungry frequencies that lack accuracy and consume I/O pins.

SiT1576 Block Diagram
SiT1576 Block Diagram.

Key specifications:

  • Smallest package, CSP-4, up to 80% smaller than quartz solutions
    • 1.5 mm × 0.8 mm (1.2 mm2 footprint)
    • 0.60 mm height for lower profile
  • Power supply current
    • 2.5 µA (100 kHz, SiT1569)
    • 5.5 µA (100 kHz, SiT1576)
  • Frequency range (factory programmed for fast delivery)
    • 1 Hz to 2 MHz (SiT1576)
    • 1 Hz to 462 kHz (SiT1569)
  • All-inclusive frequency stability includes initial offset and variations over industrial temperature (–40 to +85 °C); a more accurate clock enables better timekeeping and extends battery life
    • ±5 ppm (SiT1576)
    • ±50 ppm (SiT1569)
  • Excellent jitter performance
    • 2.2 ns RMS period jitter (100 kHz, SiT1576)
    • 4.0 ns RMS period jitter (100 kHz, SiT1569)
  • Up to 65% faster startup time
    • 300 milliseconds (max.)
  • Highest reliability and resilience; MEMS resonator mass is 500 to 1000 times smaller than quartz
    • 30 times higher shock and vibration resistance
    • 30 times higher reliability, at 1 billion hours MTBF

Samples of the SiT1576 Super-TCXO and SiT1569 oscillator are available now from SiTime for qualified customers. Production volume is planned for Q3 2017. Pricing is available upon request.

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