With AI the rapid rise of the market for portable devices such as smart glasses and bone conduction headphones, wearable devices continue to iterate towards lightweight, miniaturization, and long battery life. Constrained by the narrow internal space of temple arms and headphone cavities, battery capacity is significantly compressed; meanwhile, open-ear sound solutions impose stringent requirements on frequency response characteristics, electrostatic discharge (ESD) protection, and overall system power consumption. In actual use of wearable devices, human body static electricity can easily conduct through the shell and sound units to the amplifier chip, causing component damage; furthermore, higher system power consumption further erodes battery performance, becoming a critical pain point that terminal product design urgently needs to address.
Addressing industry pain points, awinic launchesAW87306DNR/AW87307FCR, an ultra-low power analog interface dual-channel Class‑D audio amplifier, specifically designed for portable devices such as bone conduction headphones andAI smart glasses. Focusing on ultra-low power design and equipped with spread spectrum functionality and excellent ESD protection capabilities, it balances audio performance and overall device reliability under limited battery supply conditions, helping terminal manufacturers simplify hardware design and shorten product development cycles.
Key Product Specifications
Core Product Highlights
1.Ultimate ultra-low power design, significantly extending wearable device battery life
AW87306DNR /AW97307FCR Centering on the battery life pain points of wearable devices, deeply optimizing quiescent current and operating power consumption performance.Standby power consumption per channel as low as1mA, with efficiency up to92%, effectively reducing power loss in high-frequency scenarios such as playback standby and voice interaction, alleviating AI the battery life pressure caused by the small battery capacity of smart glasses and bone conduction headphones, and extending music playback and voice interaction usage time.
2.NCN Anti-clipping technology, balancing high volume with low distortion
When the audio input signal is too large or the battery voltage drops, the audio amplifier output is prone to annoying clipping distortion, seriously affecting the listening experience.
AW87307FCREquipped with awinicNCNintelligent anti-clipping technology, it monitors the distortion status of the amplifier output in real-time and automatically dynamically adjusts the system gain, ensuring the output audio signal remains smooth and pure, avoiding harsh clipping.
Ordinary amplifiers can achieve maximum power output when fully charged, but as the battery level drops, it becomes difficult to balance power and sound quality:
At low battery levels, maximum power output; after the battery is fully charged, with unchanged gain, the output power of an ordinary amplifier remains unchanged at0.676W
Usingawinic anti-clipping amplifiers can automatically adjust the output power to1W,power increases by300mW, volume increases by1.7dB
3.Built-in spread spectrum function, optimizing EMI performance
The chip integrates a spread spectrum function that performs spread spectrum modulation on the switching frequency, dispersing interference energy over a wider frequency band to effectively reduce electromagnetic interference. This canimprove system EMI indicators, reduce interference with sensitive circuits on the board such as Bluetooth and microphones, lower the difficulty of terminal device EMI debugging, and reduce external debugging costs.
4.Robust ESD anti-interference capability, enhancing the reliability of wearable devices
AW87306DNR Features enhanced chip-level ESD protection. In typical peripheral environments, no external ESDTVSis required, passingIEC61000-4-2Level4standard tests:
±8kVContact discharge
±15kVAir discharge
Reduces the device's need for external ESD protection components, improves reliability in daily wear and outdoor sports scenarios, and ensures mass production yield;Saves ESD TVS diodes, reduces PCB layout space, and lowers system costs.
Audio as AI Wearable DevicesCore Interaction Entry Point, amplifier chips are no longer simple sound-emitting components, but ratherbattery life, sound quality,EMI andreliability—a key hardware node that balances all these factors.AW87306DNR/AW87307FCR This further perfects awinic's product matrix in the wearable audio sector, providing highly reliable analog amplifier options for bone conduction headphones andAI smart glasses customers.
In the future, awinic will continue to delve deeply intothe wearable audio field, continuously iterating around low power consumption, anti-interference, and high reliability, empowering innovation and upgrading in the consumer wearable industry with domestically developed audio chips.
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