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AR0822 实现卓越的图像质量同时优化功耗

AR0822 Image Sensor
figure_ar0822_1200x630

2023 年 3 月 16日—领先于智能电源和智能感知技术的安森美（onsemi，美国纳斯达克上市代号：ON），宣布推出一款创新的图像传感器--AR0822。该器件的嵌入式高动态范围（eHDRTM）功能和优化的近红外（NIR）响应对于照明条件恶劣的应用至关重要，如安防监控、随身摄像机、门铃摄像头和机器人。该传感器的低功耗架构和运动唤醒功能旨在大幅降低系统功耗。

AR0822是800万像素（MP）的堆叠式1/1.8英寸（对角线8.81毫米）背照式（BSI）CMOS数字图像传感器，基于2.0 µm像素。它具有3840（H）× 2160（V）的有效像素阵列，能够以60帧/秒（fps）拍摄4K视频，以线性或eHDRTM模式（120dB）捕获图像，采用卷帘快门读出。

安森美高级副总裁兼智能感知部总经理Ross Jatou说：“AR0822在低光照条件下实现领先业界的性能，同时使客户能够以更低的系统功耗和成本实现所需的120 dB eHDRTM。这种组合给了我们的客户强有力的支持，去满足市场对更先进的成像与节能方案和更长的电池使用寿命的需求。"

当今图像传感器面临的一个主要挑战是需要在不受控的光线条件下工作。具体来说，就是具有高动态范围（HDR）的场景，即具有特别明亮和黑暗区域的图像。虽然许多HDR技术使用多重曝光输出，向图像信号处理器（ISP）发送多达三个不同曝光的图像进行组合，但这种方法需要多达3倍的系统带宽和更昂贵的元器件，特别是在更高的分辨率下。AR0822嵌入了HDR功能，减小了系统带宽和处理器功耗，同时还通过智能线性化与曝光组合，对运动和闪烁的光源进行补偿，从而实现卓越的图像质量。

针对物联网（IoT）应用，为了满足客户对低功耗运行和更长的电池使用寿命的期望，AR0822以运动唤醒等专用功能优化了系统功耗。大多数摄像机在待机时以较低的功耗模式运行，并在检测到运动时恢复正常运行，以节省电力。这些系统通常需要传感器和处理器同时工作来检测运动。而AR0822可以利用其运动唤醒功能智能地检测到场景的运动变化，这使得处理器进入低功耗待机模式，直到传感器检测到运动并触发处理器恢复工作模式。

AR0822还具备增强的近红外灵敏度，和像素合并（binning）/开窗输出（windowing）等精密的摄像功能。该器件针对恶劣环境而设计，工作温度范围-30 °C到85 °C（结温）。AR0822现已供货，如欲订购，请联系安森美的销售支持和授权代理商。

About onsemi

onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. onsemi offers a highly differentiated and innovative product portfolio, delivering intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way to creating a safer, cleaner and smarter world. onsemi is recognized as a Fortune 500® company and included in the Nasdaq-100 Index® and S&P 500® index. Learn more about onsemi at www.onsemi.com.

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onsemi and the onsemi logo are trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the Company references its website in this news release, information on the website is not to be incorporated herein.

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