Cypress Semiconductor has introduced a high-sensitivity, high-speed SXGA (Super Extended Graphics Array) resolution CMOS image sensor with colour. The 1.3 Megapixel LUPA-1300-2-Color sensor offers a triggered and pipelined synchronous shutter and on-chip digital LVDS (Low Voltage Differential Signalling) outputs. Developed for machine vision and motion analysis applications that need to distinguish between different colours, the image sensor features a high frame rate of 500fps and windowing capability that delivers undistorted images and fast readout.
The LUPA-1300-2-Color features a fully synchronous snapshot shutter, making it possible to read one image while the next is being acquired and to capture moving objects without distortion. The sensor has 12, 10-bit digital LVDS outputs that allow image data to be transferred over longer distances on the circuit board, thus simplifying layout. The windowing capability enables the user to read out only regions of interest in the image, increasing the effective frame rate. It also has a multiple slope capability to maintain good contrast in shadowed regions without saturating bright areas in scenes with a high contrast ratio.
The LUPA-1300-2-Color has 1280 x 1024 pixels with 14 x 14µm pixel size. The image sensor integrates a programmable offset and gain amplifier for each channel of the LVDS outputs. Each channel runs at a 61MHz pixel rate, which results in 500fps frame rate at full resolution. Higher frame rates can be achieved by windowed or sub-sampled readout modes, which are all programmable over the SPI interface.
All internal exposure and read-out timings are generated by an on-board sequencer. The intra-scene dynamic range can be increased by using the flexible multiple slope operation mode. The LUPA-1300-2-Color also features a 10-bit on-chip analogue-to-digital converter (ADC) for digital output and on-chip timing control for easy application development. The LUPA-1300-2-Color applies a Bayer RGB colour pattern, with colour reconstruction accomplished outside the sensor.
