原标题：On Semi AR0132AT 120万象素CMOS图像传感器解决方案

　　On Semi公司的AR0132AT是1/3吋120万象素CMOS逐行扫描图像传感器,有源象素阵列1280H x 960V,可以以线性或高动态范围模式捕获图像,并具有滚动快门读出.AR0132AT包括专业照相机功能如自动曝光控制,开窗以及视频和单帧模式.设计用于低光源和高动态范围场景性能,通过两线串行接口进行编程.AR0132AT可以获得非常清晰锐利的数字图片,能够捕获连续视频和单帧图像,使它是各种应用的理想选择,包括监视和HD视频.传感器可以以恒定帧速率产生象素数据流,它的片上锁相环(PLL)能产生所有的内部时钟,最大输出象素速率74.25 Mp/s,对应于时钟速率74.25 MHz.传感器的工作温度–40℃到+105℃.主要用在汽车图像,视频监视, 720p60视频应用以及高动态范围图像.本文介绍了AR0132AT主要特性和主要参数表,框图和典型配置图,以及AR0132AT6B00XPEAH3-GEVB评估板电路图和材料清单.

　　ON Semiconductor’s AR0132AT 1/3-inch CMOS digital image sensor with an active-pixel array of 1280H x 960V. It captures images in either linear or high dynamic range modes, with a rolling-shutter readout. It includes sophisticated camera functions such as auto exposure control, windowing, and both video and single frame modes. It is designed for both low light and high dynamic range scene performance. It is programmable through a simple two-wire serial interface. The AR0132AT produces extraordinarily clear, sharp digital pictures, and its ability to capture both continuous video and single frames makes it the perfect choice for a wide range of applications, including surveillance and HD video. This sensor is compatible with ON Semiconductor’s automotive image co-processors which provides megapixel HDR image processing.

　　The ON Semiconductor AR0132AT can be operated in its default mode or programmed for frame size, exposure, gain, and other parameters. The default mode output is a 960p-resolution image at 45 frames per second (fps). In linear mode, it outputs 12-bit raw data, using either the parallel or serial (HiSPi) output ports. In high dynamic range mode, it outputs 12-bit compressed data using parallel output, or 12-bit or 14-bit compressed or 20-bit linearized data using the HiSPi port. The device may be operated in video (master) mode or in single frame trigger mode.FRAME_VALID and LINE_VALID signals are output on dedicated pins, along with a synchronized pixel clock in parallel mode.The AR0132AT includes additional features to allow application-specific tuning: windowing and offset, adjustable auto-exposure control, auto black level correction, and on-board temperature sensor. Optional register information and histogram statistic information can be embedded in first and last two lines of the image frame.The sensor is designed to operate in a wide temperature range (–40℃ to +105℃)

　　The AR0132AT is a progressive-scan sensor that generates a stream of pixel data at a constant frame rate. It uses an on-chip, phase-locked loop (PLL) that can be optionally enabled to generate all internal clocks from a single master input clock running between 6 and 50 MHz. The maximum output pixel rate is 74.25 Mp/s, corresponding to a clock rate of 74.25 MHz. Figure 1 shows a block diagram of the sensor.

　　ON Semiconductor’s AR0132AT is a 1/3-inch CMOSdigital image sensor with an active-pixel array of1280H x 960V. It captures images in either linear orhigh dynamic range modes, with a rolling-shutterreadout. It includes sophisticated camera functionssuch as auto exposure control, windowing, and bothvideo and single frame modes. It is designed for bothlow light and high dynamic range scene performance.It is programmable through a simple two-wire serialinterface. The AR0132AT produces extraordinarilyclear, sharp digital pictures, and its ability to captureboth continuous video and single frames makes it theperfect choice for a wide range of applications, includingsurveillance and HD video.

　　The AR0132AT pixel array is configured as 1412 columns by 1028 rows. The dark pixels are optically black and are used internally to monitor black level. Of the right 96 columns, 64 are dark pixels used for row noise correction. Of the top 24 rows of pixels, 12 of the dark rows are used for black level correction. There are 1288 columns by 972 rows of optically active pixels that can be readable. While the sensor’s format is 1280 x 960, the additional active columns and active rows are included for use when hori-zontal or vertical mirrored readout is enabled, to allow readout to start on the same pixel. The pixel adjustment is always performed for monochrome or color versions. The active area is surrounded with optically transparent dummy pixels to improve image uniformity within the active area. Not all dummy pixels or barrier pixels can be read out.

　　AR0132AT主要特性:

　　• Superior low-light performance

　　• HD video (720p60)

　　• Linear or high dynamic range capture

　　• Video/Single Frame modes

　　• On-chip AE and statistics engine

　　• Parallel and serial output

　　• Auto black level calibration

　　• Context switching

　　• Temperature Sensor

　　AR0132AT应用:

　　• Automotive imaging

　　• Video surveillance

　　• 720p60 video applications

　　• High dynamic range imaging

　　AR0132AT主要参数表:

图1.AR0132AT框图

图2.AR0132AT典型配置:串行四路HiSPi接口

图3.AR0132AT典型配置:并行象素数据接口

　　AR0132AT6R00XPEAD-GEVK: 1.2 MP 1/3" CIS DK

图4.1.2 MP 1/3" CIS DK外形图

　　AR0132AT6B00XPEAH3-GEVB评估板材料清单:

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