TC341

780×488 PIXEL

CCD IMAGE SENSOR

SOCS083A – OCTOBER 2002

1

POST OFFICE BOX 655303

for B/W Video and Computer Applications

with 2/3” Vidicon Optics

Image-Sensing Area

Burn-In, Residual Imaging, Image

Distortion, Image Lag, or Microphonics

description

The Texas Instruments TC341 sensor is a high-performance frame-transfer charge-coupled device (CCD)

image sensor. It is designed for use in B/W video and computer camera applications. The device is intended

to replace the 2/3-inch vidicon tube in applications requiring small size, high reliability, and lower cost.

The image-sensing area of the TC341 sensor is configured into 488 lines with 780 elements in each line.

Twenty-six elements are provided in each line for a dark reference. The blooming protection of the sensor is

based on an advanced lateral overflow drain (ALOD). The antiblooming function is activated when a suitable

dc bias is applied to the antiblooming drain pin. With this type of blooming protection it is also possible to clear

the image area of all charge. This is accomplished by supplying a single 10 V pulse for a minimum of 1

µs to

the overflow drain pin.

The sensor is designed to operate in interlace as well in progressive scan modes. The interlace mode of

operation can be achieved in two ways: by skipping odd or even lines in corresponding image fields or by a

suitable line summing. The line summing provides higher sensitivity, because all collected charge is used. The

line skipping provides somewhat higher vertical resolution, but with a penalty of lower sensitivity. The

progressive scan mode sacrifices neither sensitivity nor resolution.

A standard gated floating-diffusion charge detection node structure converts charge into a signal voltage. For

higher accuracy and stability, this structure is reset to an on-chip automatic potential-tracking voltage reference.

The reset gate has a separate external pin, which allows implementing pixel summing by skipping the detection

node reset pulses. A low-noise, two-stage, source-follower amplifier buffers the output and provides high

output-driving capability. The TC341 sensor is built using TI-proprietary virtual-phase technology, which

provides devices with high blue response, low dark current, high photoresponse uniformity, and a single-phase

clocking.

The TC241 sensor is characterized for operation from –10

°C to 45°C.

Copyright

 2002, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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3

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5

9

17

16

15

14

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12

ODB

IAG

SAG

GND

6

7

8

10

11

GND

SAG

GND

VOUT

VDD

CDB

NC

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19

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21

22

NC

RSG

TRG

SRG

NC

GND

GND

GND

IAG

IDB

GND

DUAL-IN-LINE PACKAGE

(TOP VIEW)

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.