Back-side illuminated image sensor for automotive ADAS/viewing cameras

July 13, 2015 // By Graham Prophet
ON Semiconductor’s 1/3-inch, 1-megapixel CMOS image sensor claims significant improvements in low light signal-to-noise ratio, visible light sensitivity and infrared performance.

Early sampling is announced, of ON’s first backside illuminated (BSI) sensor technology for the automotive imaging market. The sensor technology offers four-times better low light signal-to-noise ratio, a 40% increase in visible light sensitivity, and greater than 60% improvement in near-infrared (NIR) performance than the current AR0132AT CMOS image sensor for advanced driver assistance systems (ADAS).

The first product to incorporate this technology will be the AR0136AT 1/3-inch optical format CMOS digital image sensor with 1280 x 960 resolution, and 3.75 micron BSI pixels. The AR0136AT supports linear and high dynamic range (HDR) modes, in a single chip HDR solution, with a 120 dB dynamic range in HDR mode. It has an output pixel rate of 74.25 Mp/second (maximum), which results in a frame rate of 45 frames per second (fps) at 960p resolution and 60 fps at 720p resolution. It has an operating junction temperature range of -40°C to +125 C and will be fully qualified to AEC-Q100. Engineering samples will be available in Q3 of 2015, with mass production planned for early 2016.

ON Semiconductor; www.onsemi.com