SiTime Introduces Ultra-Low Power 32.768 kHz Oscillator for IoT Devices

sales@keepboomingtech.com

·March 28, 2025

·11 min read

SiTime Introduces Ultra-Low Power 32.768 kHz Oscillator for IoT Devices

The SiTime SIT1811 crystal oscillator improves efficiency in IoT devices. It is the smallest and uses the least power at 32.768 kHz. It meets the need for small, energy-saving solutions. It uses only 510 nA of current and less than 0.6 µW of power. Its silicon MEMS technology makes it more reliable. This makes it great for small spaces. The growth of 5G and IoT devices shows why this is important. Smaller designs are leading to more use of surface-mount oscillators in connected devices.

Key Takeaways

The SiTime SiT1811 oscillator is 30% smaller than others. This makes it perfect for small IoT devices.
It uses only 510 nA of power, helping batteries last longer in wearables and medical tools.
Its silicon MEMS technology makes it tough. It handles shocks and vibrations better than quartz oscillators.
It works with voltages from 1.35V to 1.98V. This makes it useful for many low-power devices.
It needs fewer extra parts, making circuits simpler and cheaper. This also makes IoT devices more reliable.

Key Features of the SiTime SiT1811 Crystal Oscillator

Small Size and Smart Design

The SiTime SiT1811 crystal oscillator is very small and smart. It measures only 1.2 mm x 1.1 mm x 0.55 mm. This makes it 30% smaller than other oscillators. Its tiny size is perfect for small devices like wearables and IoT gadgets. Even though it’s small, it works really well. It uses just 510 nA of current and less than 0.6 µW of power.

Feature	SiT1811	Other Oscillators
Dimensions	1.2 mm x 1.1 mm x 0.55 mm	Bigger than SiT1811
Size Advantage	30% smaller	None
Current Draw	510 nA	More than SiT1811
Power Consumption	< 0.6 µW	More than SiT1811
Operating Voltage Range	1.35 V to 1.98 V	Not mentioned
Integrated Phase Jitter	3 ns RMS	Not mentioned
Accuracy	±20 ppm	Not mentioned

This small size and low power make it great for portable electronics.

Uses Very Little Power

The SiT1811 crystal oscillator saves a lot of energy. It uses only 510 nA of current and less than 0.6 µW of power. This helps batteries last longer in devices like wearables and medical tools. It’s also great for smart tags. By using less energy, it helps create eco-friendly and long-lasting IoT devices.

Stable and Accurate Performance

The SiT1811 crystal oscillator stays stable and accurate, even in tough conditions. Its silicon MEMS technology makes it strong against shocks, vibrations, and temperature changes. Some features that help its stability are:

A solid design that keeps accuracy even with temperature changes.
MEMS resonators sealed in pure silicon for better durability.
Better performance than quartz oscillators, staying accurate in many situations.

These features make the SiT1811 a dependable choice for devices needing precise timing, like clocks and smartphones.

Wide Operating Voltage Range

The SiTime SiT1811 crystal oscillator works with a wide voltage range. It can handle voltages from 1.35V to 1.98V. This makes it useful for many IoT devices. It works well in low-power gadgets like wearables and monitors.

A wide voltage range helps when power sources change or vary.

Voltage Range	Description
3V - 4V	Common voltage range for low-power devices like wearables.

This feature keeps the oscillator dependable in different situations. It supports small designs and saves energy.

Strong and Long-Lasting

The SiTime SiT1811 crystal oscillator is very strong and lasts a long time. It uses silicon MEMS technology to handle tough conditions. It resists temperature changes, shocks, and humidity.

Tests show it stays accurate better than quartz oscillators. It works well even with interference, vibration, and noise. This makes it great for tools like medical devices and smart tags.

SiTime uses the Epi-Seal process to make it more durable. This seal protects the resonator from dirt and damage. It helps the oscillator last longer, even in harsh places. This is important for IoT devices that need to work for a long time.

Silicon MEMS Technology: A Big Step in Oscillator Design

Why MEMS is Better Than Quartz

Silicon MEMS technology has many benefits over quartz oscillators. These advantages make it great for modern IoT devices:

High Precision: MEMS oscillators use smart digital tools for better stability. They often perform better than quartz in some areas.
Strong and Tough: MEMS devices handle shocks and vibrations well. They work reliably in rough conditions.
Cheaper to Make: MEMS oscillators cost less and are quicker to produce. This is because they use large-scale semiconductor manufacturing.
Handles Stress Well: MEMS oscillators keep working under stress like EMI and vibrations. Quartz oscillators may fail in these situations.

Quartz oscillators are better for low noise needs. MEMS works best in tough environments.

Built to Handle Shocks and Vibrations

The SiT1811 MEMS oscillator is very strong against shocks and vibrations. It can handle shocks up to 20,000 g and vibrations up to 100 g. This makes it perfect for wearables and industrial IoT devices.

MEMS resonators are solid and durable. Quartz oscillators can break under stress, but MEMS stay intact. This makes MEMS reliable in tough places.

MEMS oscillators are a good choice for long-lasting and stable devices.

Easier Circuit Design and Fewer Parts

Silicon MEMS oscillators make circuit design simpler. They need fewer extra parts. Their small size and built-in features save space and reduce complexity.

For example, the SiT1811 oscillator has advanced tools built into it. This lowers the number of parts needed, making devices smaller and more efficient. The simpler design also cuts production costs. This makes MEMS a good choice for budget-friendly projects.

MEMS technology helps create small, efficient IoT devices without losing performance.

Uses of the Smallest and Lowest Power Oscillator

Real-Time Clocks (RTCs) for Keeping Time

Real-time clocks (RTCs) help devices keep accurate time and date. The SiT1811 oscillator uses very little power and is very precise. This makes it a great choice for RTCs in gadgets like smartphones, tablets, and wearables. These devices need exact timekeeping to work well.

The demand for RTCs is growing fast worldwide. In 2023, the market was worth about $1.5 billion. By 2032, it could grow to $2.6 billion, with a yearly growth rate of 6.4%. More IoT and smart home devices need reliable RTCs. The SiT1811, being tiny and energy-saving, fits these needs perfectly.

Wearables and Medical Devices

Wearables and medical tools need small parts that save energy. The SiT1811 oscillator is tiny and uses very little power. It works well in fitness trackers, smartwatches, and portable medical monitors. It also handles different conditions without problems.

The IoT market is making wearables more popular. In 2022, there were 1.9 billion IoT connections. By 2027, this number may grow to 5.5 billion, with a yearly growth rate of 19%. The SiT1811 helps these devices work fast and save energy at the same time.

Gaming Controllers and Smartphones

Gaming controllers and smartphones need precise timing to work smoothly. The SiT1811 oscillator is stable and resists shocks, making it dependable. Its small size also helps create thinner and lighter designs.

MEMS oscillators like the SiT1811 are becoming more popular. From 2024 to 2029, they may grow by 16% each year. Their small size and ability to handle shocks make them great for gaming and mobile devices. The SiT1811 also reduces the need for extra parts, cutting costs for manufacturers.

The SiT1811 oscillator is small, energy-saving, and reliable. It’s a game-changer for IoT devices in many industries.

Smart Tags and Other IoT Applications

Smart tags are important in today’s IoT systems. They help track, monitor, and identify items in many industries. The SiT1811 oscillator improves smart tags with accurate timing and low power use. Its tiny size fits into small designs, and it saves battery life. These features make it great for tracking inventory, managing assets, and handling logistics.

The SiT1811 also works well in other IoT devices. It is reliable and accurate, helping wearables, gaming controllers, and smartphones run smoothly. These devices need parts that work well in different conditions. The oscillator’s silicon MEMS technology makes it strong and able to handle shocks and vibrations. This toughness is key for devices used in active environments.

The SiT1811 is tough and reliable, perfect for long-lasting IoT devices.

Applications and Key Requirements

The table below shows what different IoT devices need:

Application Type	Key Needs
Wearable Devices	Precise timing, small size, low power use
Smart Tags	Precise timing, small size, low power use
Gaming Controllers	Strong, accurate, small size
Smartphones	Strong, accurate, small size
Smart Wearables	Precise timing, small size, low power use

The SiT1811 meets these needs, making it useful in many industries. Its small size and energy-saving design match the demand for smarter, smaller IoT devices.

IoT is growing fast, with billions of devices expected soon. The SiT1811 helps this growth by supporting smarter designs and lasting performance. Its advanced features let developers build reliable IoT solutions for the future.

Comparison to Competitors

Smaller Size and Power Efficiency

The SiT1811 oscillator is tiny and uses very little power. It measures just 1.2 mm x 1.1 mm x 0.55 mm. This makes it 30% smaller than other oscillators. Its small size fits perfectly in wearables and IoT devices.

It also saves a lot of energy. The SiT1811 uses only 510 nA of current. This equals less than 0.6 µW of power. It helps batteries last longer than those in devices using more energy.

Specification	SiT1811	Other Oscillators
Size	1.2 mm x 1.1 mm x 0.55 mm	30% larger
Power Draw	510 nA	Higher (not listed)
Operating Voltage Range	1.35 V to 1.98 V	Not listed
Integrated Phase Jitter	3 ns RMS	Not listed
Frequency Stability	±20 ppm	Not listed

Its small size and low power make it great for IoT devices.

Superior Reliability and Durability

The SiT1811 oscillator is strong and lasts a long time. It uses silicon MEMS technology to handle shocks and vibrations. It can survive shocks up to 20,000 g and vibrations up to 100 g. This makes it perfect for tough environments like factories or active wearables.

It also resists electromagnetic interference (EMI). SiTime’s MEMS oscillator performs 35 dB better than other MEMS and quartz oscillators. It is 54 times more resistant to radiated fields. The single-ended version is 12 dB better than quartz, making it four times stronger against EMI.

Tip: Use the SiT1811 in places with lots of vibration or EMI.

Reduced External Component Requirements

The SiT1811 makes circuit design easier by needing no extra parts. Traditional oscillators need many supporting components. The SiT1811 has advanced features built-in, reducing the number of parts. This saves space and lowers production costs.

Feature	SiT1811 Oscillator	Traditional Oscillator
External Components Required	None	Many
Component Count Reduction	Big reduction	Higher
Load Driving Capability	Up to 100 pF	Varies

Fewer parts mean smaller, cheaper, and more reliable devices. This is great for manufacturers making compact IoT products.

The SiT1811 design reduces failure risks and improves reliability.

The SiTime SiT1811 crystal oscillator sets a new level for IoT devices. It is small, uses little power, and is very reliable. Its silicon MEMS technology helps it work well in tough conditions. This makes it perfect for today’s advanced devices.

Here are some key facts about its performance:

Feature	SiT1811 Value	Compared to Others
Size	1.2 mm x 1.1 mm x 0.55 mm	30% smaller than others
Energy Use	510 nA	Less than competitors
Phase Jitter	3 ns RMS	Matches industry levels
Frequency Accuracy	±20 ppm	Meets industry standard
Lifespan (MTBF)	Over 2 billion hours	Longer than most
Shock Resistance	Top-notch	Depends on the model
Vibration Resistance	Top-notch	Depends on the model

This oscillator works in many devices, like wearables and smart tags. It helps create smarter, more efficient designs. SiTime is leading the way in improving IoT technology.

Why is the SiT1811 great for IoT devices?

The SiT1811 is tiny, saves energy, and works reliably. Its silicon MEMS technology keeps it strong and accurate. These qualities make it perfect for small IoT gadgets with long-lasting batteries.

How is the SiT1811 better than quartz oscillators?

The SiT1811 handles shocks and vibrations better than quartz. It uses less power and needs fewer extra parts. These features make it a better choice for modern devices.

Can the SiT1811 work in tough conditions?

Yes, the SiT1811 can handle shocks up to 20,000 g and vibrations up to 100 g. Its silicon MEMS design keeps it working well in harsh places. It’s great for wearables and industrial tools.

What devices use the SiT1811 the most?

Wearables, medical gadgets, gaming controllers, and smart tags use it a lot. Its small size, low energy use, and strong design make it perfect for these devices.

Why is saving power important for IoT gadgets?

Saving power helps batteries last longer. This means less charging or replacing. It’s very useful for portable IoT devices like wearables and smart tags.