MEMS oscillator reference clocks for industrial IoT

MEMS oscillator reference clocks for industrial IoT

New Products |
By Graham Prophet

Using SiTime’s 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 analogue 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.


The MEMS timing solutions replace quartz oscillators that have limited frequency options, or internally-generated (MCU) power-hungry frequencies that lack accuracy and consume I/O pins.





Next page; detailed specification listing…

Key specifications:


Smallest package, CSP-4, up to 80% smaller than quartz solutions

1.5 mm x 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 +85C); a more accurate clock enables better timekeeping and extends battery life

±5 ppm (SiT1576)

±50 ppm (SiT1569)

Jitter performance

2.2 nsec RMS period jitter (100 kHz, SiT1576)

4.0 nsec 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


Product pages;







If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :    eeNews on Google News


Linked Articles