Smart Watches and Fitness Trackers

Smartwatches and fitness trackers must be feature-rich, user-friendly, and beautiful. These devices must continually incorporate the latest technology to enable a growing list of functions, while at the same time consume less space and power. Plus, at the end of the day, they need to deliver accurate time with no drift.

SiTime MEMS 32 kHz oscillators provide the solution for smartwatches and activity trackers to win in both form and function – with ultra-small, low-power, high-accuracy timing.

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SiTime MEMS Timing Benefits

Smallest footprint and power

1.2 mm² CSP

Ultra-low power from <1 µA

Ability to drive multiple loads

Robust clocking solutions

±5 ppm frequency stability

Immunity to power supply noise

Gas hermetically sealed

Integrated MEMS, easy to use

No external quartz

No quartz reliability issues

No cover or shielding

Smart Watches and Fitness Trackers Block Diagram

32 kHz MEMS Timing for Smart Watches and Fitness Trackers

Devices	Frequency Stability	Features
SiT1580 32.768 kHz TCXO	±5 ppm	Low power: <4.5 µA High robustness: Immune to small molecular gasses LVCMOS: Drive multiple loads
SiT1552 32.768 kHz TCXO	±5 ppm	Low power: <1 µA NanoDrive™ technology: Optimize output swing
SiT1532 32.768 kHz XO	±75 ppm	Low power: <1 µA NanoDrive™ technology: Optimize output swing

Devices

Frequency Stability

Features

SiT1580 32.768 kHz TCXO

±5 ppm

Low power: <4.5 µA

High robustness: Immune to small molecular gasses

LVCMOS: Drive multiple loads

SiT1552 32.768 kHz TCXO

±5 ppm

Low power: <1 µA

NanoDrive™ technology: Optimize output swing

SiT1532 32.768 kHz XO

±75 ppm

Low power: <1 µA

NanoDrive™ technology: Optimize output swing

“Garmin makes products that are engineered on the inside for life on the outside. Our innovation focuses on developing technologies that enable our customers to enrich their experiences as they pursue their passions. SiTime’s MEMS timing solutions help extend battery life across several of our product lines.”

Patrick Desbois, Executive vice president of operations, Garmin

MEMS Timing Outperforms Quartz

Lower Power
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Smallest Size, Lower BOM	Drive Multiple Loads
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Best 32 kHz Oscillator Stability	Better 32 kHz TCXO Stability
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Watch Video: How SiTime Saves Space for IoT, Wearable, and Mobile Applications

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Smart Watches and Fitness Trackers