Product Information

Features

• Medium-Resolution, Solid-State Image Sensor for Low-Cost B/W TV Applications
• 324(H) x 243(V) Active Elements in Image Sensing Area
• 10-µm Square Pixels
• Fast Clear Capability
• Electronic Shutter Function From 1/60-1/50000 s
• Low Dark Current
• Electron-Hole Recombination Antiblooming
• Dynamic Range . . . 66 dB Typical
• High Sensitivity
• High Blue Response
• 8-Pin Dual-In-Line Plastic Package
• 4-mm Image-Area Diagonal
• Solid-State Reliability With No Image Burn-In, Residual Imaging, Image Distortion, Image Lag, or Microphonics
• High Photoresponse Uniformity

Description

The TC255P is a frame-transfer charge-coupled device (CCD) designed for use in B/W NTSC TV and special-purpose applications where low cost and small size are desired.

The image-sensing area of the TC255P is configured in 243 lines with 336 elements in each line. Twelve elements are provided in each line for dark reference. The blooming-protection feature of the sensor is based on recombining excess charge with charge of opposite polarity in the substrate. This antiblooming is activated by supplying clocking pulses to the antiblooming gate, which is an integral part of each image-sensing element.

The sensor can be operated in a noninterlace mode as a 324(H) by 243(V) sensor with low dark current. The device can also be operated in an interlace mode, electronically displacing the image-sensing elements during the charge integration in alternate fields, and effectively increasing the vertical resolution and minimizing aliasing.

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