Hearables and Wearables

Analog Devices’ hearable and wearable solutions combine market-leading technology such as audio codecs and amplifiers with battery management and power technologies such as single-inductor multiple-output (SIMO), fuel gauges, and vital sign monitoring. Our interface products deliver hardware solutions in areas such as true wireless stereo (TWS) earbuds, smartwatches, over the ear headphones, and smart glasses, among others. In addition to hardware, ADI delivers a suite of advanced solution-focused algorithms to enable superior performance in key hearable and wearable applications such as active noise cancellation (ANC), voice calling, and body/health measurement.
High Quality, Low Power Audio Solutions
Low power audio is becoming a popular alternative to power-hungry visual displays on battery-powered devices such as hearables and wearables. ADI has the audio solutions you need to embrace this trend, with an extensive history in high fidelity audio as well as expertise in low power electronics and battery management solutions.
ADI offers a broad portfolio of codec and Class-D audio solutions that deliver top performance and unrivalled signal-to-noise ratio (SNR) optimized for hearables and wearables. Our speaker amplifiers offer output power levels from less than 1 W up to 50 W. Innovative packaging technology provides the smallest Class AB and Class-D amplifiers available with design solutions that require minimal configuration. Our Dynamic Speaker Management™(DSM) smart amplifiers combine high performance current and voltage (IV) sense amplifiers with a patented DSM algorithm to create louder and richer sound from microspeakers. Finally, our battery management solutions enable low power operations that extend run time and overall longevity for hearable and wearable technology.
In terms of software, ADI provides an enhanced offering of programming capabilities (such as SigmaStudio®) and an extensive algorithm library featuring both ADI and third party offerings.

Webinar: ANC for Wireless Headphones
Active noise cancellation helps provide a more immersive and natural interaction between people and technology. See how ADI solutions can enhance headphones and other hearable technology.

Bowers & Wilkins Cancel Noise, Not Quality
Thanks to ADI’s power supply solutions, Bowers & Wilkins developed a noise-cancelling headphone platform with multiple levels of ANC and some of the longest playtime available, all without sacrificing sound quality.

ADI LISTN: Voice Solutions for Hearables
ADI's portfolio of voice processing algorithms lead to differentiating features for earbuds and headphones. Pure Voice improves voice calling quality in challenging acoustic environments and Hearing Augmentation adds personal sound amplification to widely used consumer devices.

Dynamic Speaker Management
Dynamic Speaker Management™ (DSM) smart amplifiers combine high performance current and voltage (IV) sense amplifiers with a patented DSM algorithm to create louder and richer sound from microspeakers.

Taking Wireless Headphones to the Next Level
This demo highlights advanced ADI technologies embedded in earphone/headphones showing how consumer electronic devices can provide a differentiated feature set.

Antinoise in Hearables
Learn how personal sound amplification products (PSAPs) enhance the user’s listening experience in challenging environments by simultaneously reducing unwanted ambient noise and amplifying the desired ambient sound.

Great Sound. Long Life. Meet the Codec That Does it All
Users of small, portable electronics like earbuds expect great audio quality along with extended battery life. For enhanced audio quality, look for an audio codec with programmable functions designed to deliver the best listening experience.
Featured Products
Low Power and Battery Management
ADI’s battery management technologies support optimal battery health, safety, and longevity for hearable and wearable solutions. ADI’s battery solutions offer excellent noise performance, faster, safer charging, smaller total solution sizes, highest power density, and highest efficiency across the entire load range.
Ultra low quiescent current enables the longest battery life by maximizing run time, standby, and shelf life. Our SIMO power converter architecture offers space savings while maintaining high efficiency. Together, these solutions enable the IC to extend battery life for space-constrained, battery-powered electronic products such as smart watches and other wearables.
Our switched capacitor converter provides up to 98% efficiency while our low power power management ICs (PMICs) enable low operating current, high efficiency power conversion, and compact form factors that are critical for hearable and wearable products.

SIMO Makes Space for Added Functionality in Wearables
With scalable, low power SIMO PMICs in your design, you can regain board space for value-added modules enabling functions such as voice commands, biometrics, gesture control, GPS, and more.

Take Charge of Battery Charging with AccuCharge Technology
As rechargeable batteries become more and more prevalent in personal electronic devices, see how ADI’s novel AccuCharge™ technology can help ensure safe charging, comprehensive protection, and the most accurate fuel gauging.

SIMO Saves Power and Space in Hearables
New SIMO architecture offers the smallest form factor, ultralow standby power, and high system efficiency for hearables. See how SIMO can reduce power dissipation and overall component count in less than half the space.

Everything You Need to Know About SIMO
SIMO architecture helps extend battery life for space-constrained electronic products. Learn how it works and see how you can combine the SIMO regulator with PMICs for space and power savings in hearables and wearables.
Featured Products
Wearable VSM Solutions
ADI provides a range of discrete and integrated signal chain products ideal for wearable MCUs and health sensors. Our wearable solutions for VSM and health offer a range of merits including low power, low noise, and multichannel capability. ADI’s solutions provide clinical-grade accuracy in the smallest possible footprint while achieving the lowest possible power consumption, with various PMICs available to ensure the longest run time and lifespan for these small, battery-powered devices.

MAXREFDES104: Health Sensor Platform 3.0
Watch the video and learn about the MAXREFDES104, a reference design ready to collect blood oxygen, ECG, heart rate, body temperature, and activity data.

Clinical-Grade PPG Without the Battery Drain
A key challenge for designers is how to make high quality HR and SpO2 measurements in a way that doesn’t place a heavy drain on the battery of the device. Our sensor IC uses a novel architecture to substantially reduce power consumption while making clinical-grade measurements.

Actionable Insights in Wearable Healthcare
A revolution in wearable patient monitoring is allowing medical professionals to proactively manage preventative care needs and chronic conditions. Learn how wearable device developers can improve the accuracy of actionable insights for remote patient monitoring.
Featured Products
Hearables and Wearables Featured Resources
Software, Algorithms, and Tools
ADI and the Metaverse: The Edge of What’s Possible
Intelligence at the edge is the key to a truly immersive 3D experience in the Metaverse and beyond. ADI provides innovative edge solutions for next-generation extended reality devices, as well as cloud, network, and energy solutions to support the infrastructure upgrades these devices require.


Speech Processing Solutions
The versatile speech processing solutions from ADI enable a wide range of applications such as basic communications, gaming, conferencing solutions, and voice UI. Visit our EngineerZone™ to explore more and reach out to ADI engineers with any questions you may have.

SIMO Calculator
SIMO calculator helps you explore the tradeoffs associated with SIMO parameters, and provides guidance on ways to enhance your design. This spreadsheet tool is used to estimate if a DCM SIMO regulator can support a given set of output voltage and load current conditions.
Evaluation Kits
Featured Reference Designs
Interactive Signal Chains

Latest Resources
Videos
- Designing with DSM Video Training Series SERIES
- DSM Sound Studio User's Guide for the MAX98390 Video Training Series SERIES
- Context Aware Hearable Solutions
- Experience the Limitless Potential of the Intelligent Edge
- Micro Speaker 101
Application Notes
Articles
Technical Articles
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Simplify Your USB-C PD Design Using a Standalone PD Controller
Analog Dialogue
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How to Easily Achieve Superior Audio Performance with Plug and Play Digital Input Class D Amplifiers
Analog Dialogue
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Simplifying TWS Earbud Designs with 1-Wire Connectivity
Analog Dialogue
- Enhancing Personal Sound Amplification Product (PSAP) Audio Performance and Power Efficiency in Hearables with Anti-Noise
- SIMO Switching Regulators: Extending Battery Life for Hearables and Wearables
Webcasts
- Audio Design Solutions for Augmented and Virtual Reality (AR/VR) Glasses
- Extending Battery Life with Precision Low Power Signal Chains
- Simplify Power Supply Selection for Your Next Generation Wellness Device
- High-Resolution 3D Vision Enabled by ADI Time-of-Flights Solutions
- Enabling the Next Generation of Sustainable Motion Detection & Sensing