Image sensors
Despite the poor lighting conditions
ON Semiconductor announces a second image sensor with IT-EMCCD technology that allows sharp images to be taken even in unfavorable lighting conditions. Samples of the 8 megapixel sensor are already available.
IT-EMCCD stands for Interline Transfer Electron Multiplying Charge-Coupled Device. It combines the two established imaging techniques of interline transfer (next to each light-active pixel column is a non-light-active pixel column that serves as an intermediate storage) and electron multiplying (an electron multiplier path is located in front of the output amplifier).
Following the 2 megapixel KAE-02150 image sensor, the KAE-08151 (8 megapixel) now announced is the second IT EMCCD image sensor from ON Semiconductor. The technology achieves a very high dynamic range, low readout noise and a low dark current. Behind the high dynamic range is an 'intra-scene mode', which was already introduced with the first IT-EMCCD image sensor: Depending on the incidence of light, the image information for each individual pixel arrives either via the ordinary CCD output or via the electron multiplier path. This selection process increases the dynamic range from 66 dB without 'intra-scene mode' to 86 dB. This means that scenes with different lighting conditions can be captured sharply in one image - from sunlight to starlight.
The KAE-08151 was designed for scientific imaging in high-resolution microscopy and for industrial image processing under unfavorable lighting conditions. In order to simplify the integration of the sensor for camera manufacturers, a second variant of the CPGA-155 housing is offered, in which a thermoelectric cooler is integrated into the housing. ON Semiconductor will offer the first samples of this variant in Q1 2017. The KAE-08151 in the standard CPGA-155 package is already available as a sample.










