AMI Introduces High Performance CMOS Imaging IC With VGA Resolution
The AMIS-70700 can be used at temperatures ranging from -40ºC to 105ºC. High pixel resolution of 750 x 400 is combined with an RS232 image output speed up to 60 full frames per second. The IC combines low fixed pattern noise with a high signal-to-noise ratio (SNR) and uses built-in compensation techniques to minimize high temperature leakage. Use of the Photonfocus LinLog technology contributes to the IC's dynamic range and ensures acquisition of high contrast images without image lag or smear. In addition, the LinLog ‘global shutter' capability allows fast moving scenes to be captured without motion artifacts.
The high performance, wide operating temperature range and high SNR capabilities of the new IC make it well suited for ‘real-time' intelligent camera applications. In the automotive sector these include driver assistance systems such as rear view park assist and blind spot detection, and obstacle detection and avoidance systems. In the industrial and security environments the AMIS-70700 meets requirements for high quality digital cameras capable of operating in low light or the infrared spectrum, and in high temperature applications such as welding process monitoring.
A key element in the AMIS IC implementation has been the use of the Photonfocus LinLog technology. LinLog overcomes the drawbacks of pure logarithmic image sensors by using a linear response at low illumination levels and logarithmic compression at high intensities. Transition between the two is optimized to prevent artifacts and discontinuities. The use of linear response at low light levels increases the signal swing at the output of the pixel to maximise sensitivity. In addition it reduces the effects of fixed pattern offset and gain noise associated with logarithmic sensors.
"From must-have automotive comfort and safety systems to industrial and security products, intelligent digital cameras are becoming a key element of new and emerging applications", said Bob Klosterboer, AMI Semiconductor's senior vice president of mixed-signal products. "The AMIS-70700 IC provides an integrated and cost-effective solution that delivers the high levels of functionality and performance that these applications demand, while lowering component count and simplifying circuit design."
Available now in production quantities, the AMIS-70700 – (also known as the EMPHIS-300 by Photonfocus) is supplied as bumped and un-bumped probed wafer. A ceramic CLCC 52-pin package option suitable for use in harsh environments is also available. An evaluation kit can be offered to assist engineers in evaluating and implementing the new IC in their intelligent camera applications.
Photonfocus will act as AMI Semiconductor's distribution partner for industrial applications based on the new device, in addition to providing technical application support to AMIS automotive customers.
SOURCE: AMI Semiconductor