TC240

Supply voltage range for ADB, CDB, IDB, TDB (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to 15 V
Input voltage range for ABG, IAG, SAG, SRG, TRG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V to 15 V
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30°C to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C


† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to the substrate terminal.

The TC240 is a frame-transfer charge-coupled device (CCD) image sensor designed for use in single-chip color NTSC TV applications. The device is intended to replace a 2/3-inch vidicon tube in applications requiring small size, high reliability, and low cost.

The image-sensing area of the TC240 is configured into 244 lines with 780 elements in each line. Twenty-four elements are provided in each line for dark reference. The blooming protection incorporated into 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, an integral part of each image-sensing element. The sensor is designed to operate in an interlace mode, electronically displacing the image-sensing elements by one-half of a vertical line during the charge integration period in alternate fields, effectively increasing the vertical resolution and minimizing aliasing. The single-chip color-sensing capability of the TC240 is achieved by laminating a striped color filter with RGB organization on top of the image-sensing area. The stripes are precisely aligned to the sensing  lements, and the signal charge columns are multiplexed during the readout into three separate registers with three separate outputs corresponding to each individual color.

A gated floating-diffusion detection structure with an automatic reset and voltage reference incorporated on chip converts charge to signal voltage. A low-noise, two-stage, source-follower amplifier buffers the output and provides high output-drive capability.

The TC240 is built using TI-proprietary virtual-phase technology, which provides devices with high blue response, low dark signal, good uniformity, and single-phase clocking. The TC240 is characterized for operation from 10°C to 45°C.