What are the importance and standards of wearable devices for crystal oscillators? What are the application scope?
Wearable devices have close contact with the human body and can collect various human data, providing interactive experiences in various aspects such as vision, touch, hearing, and health monitoring; Wearable devices are an extension of mobile phone usage habits, and some functions such as message notifications, listening to music, making phone calls, and health checks can be achieved without taking out the phone, making it convenient to use. The types of smart wearable products are very diverse, which can be worn or worn, come into contact with the human body, collect human health information, help users listen to or see content, use smartphones for data transmission and other devices, all of which can be collectively referred to as "smart wearable".
High quality crystal oscillators are important for the design of wearable devices
Most wearable devices are built to collect data from users during a given activity. In the design and engineering of wearable devices, special attention should be paid to the overall functionality and durability of crystal oscillator components to ensure long-term reliable performance under the harsh conditions of their intended use. Crystal oscillator components used for wearable devices should also be designed for their overall energy efficiency. The lower the power required for device operation, the more functions the device can perform. Low power design can also save energy when the device is not active. Low power crystal oscillator components not only prolong the power supply time of wearable devices, but also help extend their lifespan.
Wearable device standards for crystal oscillators
Low power consumption: The lower the power required for wearable device operation, the more functions the device can perform. Low power design can save energy when the device is not active. Low power crystal oscillator components not only prolong the power supply time of wearable devices, but also help extend their lifespan.
Small and lightweight: For wearable devices, consumers will pay more attention to their compactness and portability, which requires us to reduce their size.
High stability: The core functions of wearable devices are data transmission, data collection, and data processing. For example, wearable medical devices require real-time monitoring of blood pressure and heart rate, and require high stability of crystal oscillators.
Crystal oscillators in wearable device applications
1. VR/AR glasses
VR/AR glasses are a type of virtual reality head mounted display device that can block the human's visual and auditory perception of the outside world, guiding users to create a feeling of being in a virtual environment.
Recommended crystal oscillator models: SMD2520 SMD crystal oscillator, SMD2016 SMD crystal oscillator
Frequency range: 4MHz~54MHz
Frequency deviation: ± 10ppm to ± 30ppm
Load capacitance: 12pF, 20pF
Working temperature: -20~+70 ° C, -40~+85 ° C
Aging rate: ± 3ppm/year
2. Smart glasses
The current smart glasses market mainly combines smart audio with the form of glasses to achieve both functions, which can be used for fashion decoration and provide an open audio user experience.
Recommended crystal oscillator models: SMD3225 chip mounted crystal oscillator, V2520 chip mounted crystal oscillator
Frequency range: 1MHz~125MHz
Frequency deviation: ± 20ppm to ± 50ppm
Load capacitance: 15pF
Working temperature: -20~+70 ℃, -40~+85 ℃
Aging rate: ± 2ppm/year
3. Bluetooth earphones
Bluetooth earphones completely eliminate the method of wire connection from the outside and mainly achieve wireless transmission through Bluetooth technology. The main functions include listening to music, making calls, watching videos, playing games, etc., and it also has great potential to carry multimedia portals in the future.
Recommended crystal oscillator models: SMD2520 SMD crystal oscillator, SMD2016 SMD crystal oscillator, SMD1612 SMD crystal oscillator
Frequency range: 24MHz~54MHz
Frequency deviation: ± 10ppm to ± 20ppm,
Load capacitance: 8pF, 10pF
Working temperature: -10~+60 ℃, -20~+70 ℃, -40~+85 ℃
Aging rate: ± 3ppm/year
4. Smart Watch
A smartwatch not only has a customizable personalized dial, but also carries the function of monitoring human health. At the same time, it is an extension of the mobile screen, which can display message notifications, make mobile payments, and link with smart homes.
Recommended crystal oscillator models: SMD3225 SMD crystal oscillator, SMD2520 SMD crystal oscillator
5. Smart Ring
The smart ring has a small size and powerful functions, including a built-in microphone and earphones for making Bluetooth calls. It supports alarms, NFC mobile payments, pedometers, SOS reminders, Bluetooth shortcut buttons, and more. It also comes with a built-in microprocessor and multiple sensors, allowing us to complete various operations through gesture control.
Recommended crystal oscillator model: SMD1610 chip mounted crystal oscillator
Frequency range: 32.768KHz
Frequency deviation: ± 10ppm to ± 20ppm
Load capacitance: 7pF, 9pF, 12.5pF
Working temperature: -40~+85 ℃
Aging rate: ± 3ppm/year
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