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Optoelectronics/Displays??

Image sensor boasts 150fps, fast readout

Posted: 06 Nov 2009 ?? ?Print Version ?Bookmark and Share

Keywords:CMOS? image sensor? snaphot shutter function?

Cypress Semiconductor Corp. unveils a CMOS image sensor targeted for the machine vision market. The high-sensitivity, high-speed 1.3Mpixel VITA 1300 sensor combines a pipelined and triggered global snapshot shutter with a frame rate of 150fps for undistorted images and fast readout. The pipelined snapshot shutter capability enables exposure during read-out to reduce motion blur.

The sensor also works in a rolling shutter mode with Correlated Double Sampling to reduce noise and increase dynamic range. The new VITA 1300 family builds on Cypress' IBIS5 imagers in the machine vision market, and also addresses barcode scanning, motion monitoring and security applications.

The VITA 1300 sensor offers a 1/2-inch optical format with monochrome or color digital output. The sensor has four 10-bit digital LVDS outputs that enable transfer of image data over a standard industry protocol at low power and low noise. 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.

"Cypress has established a leadership position in the machine vision market by providing a broad portfolio of high-performance CMOS image sensors with strong customer support," said Georges Hiltrop, general manager of Cypress' image sensor business unit. "The VITA 1300 sensor adds a pipelined shutter, over 5x faster frame-rate and other innovative features to the strong foundation the IBIS5 has built for machine vision applications."

The VITA 1300 sensor has 1,280 x 1,024 active pixels with 4.8?m x 4.8?m pixel size. The image sensor integrates a programmable offset and gain amplifier for each channel of the LVDS outputs. Each channel runs at a 620Mbit/s, which results in 150fps frame rate at full resolution. Higher frame rates can be achieved by windowed or sub-sampled readout modes. Settings of the sensor are programmable over the SPI interface. All internal exposure and timing of read-outs are generated by an on-board sequencer. Extended optical dynamic range can be achieved by setting multiple slopes. The VITA 1300 sensor also features a 10bit on-chip ADC for digital output and on-chip timing control for easy application development. An alternative data output is available through a single 10bit parallel CMOS data output, operating at 62MSps.

Samples of the VITA 1300 image sensor are expected to be available in February 2010, with production devices expected in Q4 10.

For application notes on image sensors click here.





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