MEMS oscillator reference clocks for industrial IoT
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.
SiTime; www.sitime.com
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;
SiT1569: https://www.sitime.com/products/1-khz-to-1-mhz-oscillators-tcxo/sit1569
SiT1576: https://www.sitime.com/products/1-khz-to-1-mhz-oscillators-tcxo/sit1576
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