Forza, NHK show 133-Mpixel sensor
The sensor was presented at the International Solid-State Circuits Conference (ISSCC) held in San Francisco in February. The sensor was designed by Forza (Pasadena, Calif.) and fabricated for NHK using a 0.18-micron 3.3V/1.8V manufacturing process with 1D stitching together multiple mask images on a die.
To date conventional image sensors for 8K applications have used 8 MP and 33 MP solutions in large optical formats. These sensor solutions have not been effective in managing the trade-offs between size and resolution. In order to eliminate the bulky lens/color-prism optical system of previous generation cameras, the team developed a single-chip 133 MP image sensor.
The sensor takes advantage of Forza Silicon’s third generation readout architecture to achieve frame frequency of 60 fps. The Gen 3 readout architecture uses a pseudo-column parallel design with redundant 14-bit successive approximation register ADCs to achieve a throughput of 128Gbit/s at full resolution and frame rate.
"Forza’s dedicated support and its image sensor design expertise enabled us to achieve the Super Hi-Vision 8K single-chip camera — the largest pixel count of any video image sensor," said Hiroshi Shimamoto, senior research engineer at NHK Science & Technology Research Laboratories (STRL).
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