C640 Linear Space Sensor
 The C640 is designed to provide high resolution and low power consumption for machine vision and spectroscopy applications. The C640 is a mixed mode IC combining analog circuitry, digital circuitry and optical sensor circuitry all on one chip. This chip integrates active pixel sensor array, programmable gain amplifier (PGA), 12 bit analog to digital converter (ADC), voltage regulator, low voltage differential amplifier (LVDS) and timing generator together in one design. Image processing functions include Coarse and Fine gain control which can be latched through an external latch start pulse. The device can operate in Single Frame Pixel Charge Capture mode, Multi-frame Pixel Charge Accumulation mode or Power down mode: -Single Frame Pixel Charge Capture mode: Each pixel of the signal is readout and then reset for each frame. -Multi-frame Pixel Charge Accumulation mode: Each pixel of the signal is not reset during readout. The video signal of each pixel is accumulated during subsequent frames. The second frame pixel charge adds to (accumulates) the charge of the first frame pixel charge and so on. The Multi-Frame Accumulation mode can accumulate up to thirty-two (32) frames as compared to the single capture in one (1) frame. This unique function targets extremely low light level applications. -Power down mode: All of the blocks are powered down, except for the latch block, to save power. This device uses CMOS Sensor’s proprietary advanced APS technology and readout structure to reduce the fixed pattern noise, increase dynamic range and improve linearity. Features
7 um x 7 um pixel size 7 um element pitch 4000 active elements30 dummy elements (20 dummy at starting and 10 dummy at end for dark signal cancellation) 28000 um x 7 um image sizeSingle video readout, 12 bit resolution, serial readout mode Snap Shot Operation (start and stop integration for all pixels simultaneously) Auto dark voltage cancellationFixed pattern noise cancellation Programmable gain control feature:Global exposure control function (no integration will take place till exposure control is active) Launched October 22nd, 2008 aboard the Chandrayaan-1 spacecraft, the C640 has been used to image both the earth and its moon.  | C650 Space Sensor Array
 The C650 is a 256x512 element area array. It uses active pixel sensor design techniques coupled to a large pixel size providing slow scan, low power consumption for space and machine vision applications. The C650 is s mixed mode design combining analog circuitry, digital circuitry and optical sensor circuitry on the same chip. This chip integrates a 256x512 active pixel sensor array, a PGA for row wise gain compensation, I 2C interface, SRAM, 12 bit analog to digital (ADC) convertor, voltage regulator, low voltage differential amplifier (LVDS) and timing generator in the same design.The device can be operated in imaging mode or power down mode. Device settings include coarse gain, row wise PGA gain, ADC input selection and data output type. Operating modes are readable through the I2C interface while the row wise PGA gain is setable with this interface. The coarse gain can be latched through an external latch start pulse. This C650 uses CMOS Sensor’s proprietary advanced APS technology and readout structure to reduce the fixed pattern noise, increase dynamic range and improve linearity. The pixel size is 50 um square on an element pitch of 50 um. The device can respond over the spectral wavelength of 400 nm to 950 nm. Features
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Space Sensors |