SiTime Introduces Smallest, Most Stable 32 kHz Super-TCXO with In-System Auto-Calibration

By  | March 14, 2016 | Filed under: Float Switch, Level Sensors, Wireless Sensors



March 14, 2016








SUNNYVALE, CA — SiTime Corporation introduces the SiT156x/7x families of 32 kHz Super-TCXOs. These unique timing solutions are available in a tiny, 1.2 mm2 footprint, which is up to 85% smaller than quartz products. Additionally, by using SiTime’s revolutionary TempFlat MEMS™ technology, these Super-TCXOs deliver ±5 ppm accuracy, which enables chronometer-grade timekeeping and the longest battery life. The SiT1568 also offers an innovative, in-system, auto-calibration feature that allows customers to eliminate timing inaccuracies introduced during system assembly, reflow, underfill, and overmolding. Designers of wearable, IoT and mobile applications such as miniaturized modules, smart watches, activity trackers, tablets, mobile phones and smart meters can use these unique features to offer the best timekeeping and longest battery life.

The SiT1566, SiT1568, and SiT1576 Super-TCXOs are available today in a 1.5 x 0.8 x 0.6 mm (l x w x h) chip scale package (CSP). These devices perform the following critical functions in a wearable, IoT or mobile system.

•Reference for real time clock (RTC) function

•Sleep clock for connectivity – Bluetooth, Bluetooth Low Energy (BLE), WiFi

•Reference for audio subsystem

Compared to a 32 kHz quartz TCXO, oscillator, or resonator, the SiT156x/7x MEMS Super-TCXOs offer the following unique features.

•Up to 85% smaller footprint

•±5 ppm all-inclusive frequency stability, includes initial offset and variations over industrial temperature (-40 to +85°C) – a more accurate clock enables the best timekeeping and extends battery life

•Optional in-system auto-calibration (SiT1568) removes frequency offsets associated with assembly, reflow, underfill, and overmolding and ensures that system timekeeping is not impacted by manufacturing stressors

•Programmable temperature sensing update rate that maintains dynamic and overall stability in the presence of fast thermal gradients in industrial and mobile applications

•Optional factory-programmable frequencies from 1 Hz to 1 MHz (SiT1576) to support low-power RF and wireless charging

•Ability to drive multiple loads, which reduces the number of components on a board

•±1.5 ppm 1st year aging (2 times better than quartz devices) which ensures best timekeeping over many years

•Excellent jitter performance that supports audio standards; SiT1566, SiT1568 and SiT1576 can be used as an audio reference in wearable electronics

•Up to 65% faster startup time (300 milliseconds)

•Up to 40% thinner, with a max height of 0.60 mm, for height-limited modules

Samples of the SiT156x and SiT157x families are now available from SiTime for qualified customers. General availability and production volumes will be available in Q2 2016. Pricing is available upon request.

For more information and datasheets, visit

SiT1566: http://www.sitime.com/products/32-khz-super-tcxo/sit1566

SiT1568: http://www.sitime.com/products/32-khz-super-tcxo/sit1568

SiT1576: http://www.sitime.com/products/1-khz-1mhz-oscillators/sit1576

Source Article from http://www.sensorsmag.com/news/tech-product/news/sitime-introduces-smallest-most-stable-32-khz-super-tcxo-21324
SiTime Introduces Smallest, Most Stable 32 kHz Super-TCXO with In-System Auto-Calibration
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