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TC253SPD-B0 датащи(PDF) 6 Page - Texas Instruments |
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TC253SPD-B0 датащи(HTML) 6 Page - Texas Instruments |
6 / 23 page TC253SPDB0 680 × 500 PIXEL IMPACTRON CCD IMAGE SENSOR JULY 2003 − SOCS084 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 + + + + + + + + + + + + + + + + + + + + + + + + + n − Buried Channel p − Substrate p+ Virtual Phase X Ø Pixel Cross Section Channel Potential Integrated Charge IAG2/SAG2 IAG1/SAG1 Polysilicon Gates Figure 1. Image Area and Storage Area Pixel Cross Section With Potential Diagram advanced lateral overflow drain The advanced lateral overflow drain structure is shared by two neighboring pixels in each line. Varying the dc bias of the antiblooming drain controls the blooming protection level and trades it for well capacity. Applying a pulse to the drain, approximately 7 V above the nominal level for a minimum of 1 µs, removes all charge from the pixels. This feature permits precise control of the integration time on a frame-by-frame basis. The single-pulse clearing capability also reduces smear by eliminating accumulated charge in pixels before the start of the integration period (single-sided smear). The application of a negative 0.5-V pulse to the antiblooming drain during the parallel transfer is recommended. This pulse prevents the creation of undesirable artifacts caused by the on-chip cross talk between the image area gate clock lines and the antiblooming drain bias lines. serial register and charge multiplier The serial register is used for transporting charge stored in the memory pixels to the output amplifier. However, the TC253SPD-B0 device has a serial register with twice the standard length. The first half has a conventional design that interfaces with the memory and the clearing drain as it would in any other CCD sensor (for example the TC237 sensor). The second half, however, is unique and includes 400 charge-multiplication stages with a number of dummy pixels that are needed to transport charge between the active register blocks and the output |
Аналогичный номер детали - TC253SPD-B0 |
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Аналогичное описание - TC253SPD-B0 |
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