TC281

1036-

× 1010-PIXEL CCD IMAGE SENSOR

SOCS058D – JUNE 1996 – REVISED MARCH 2003

2

POST OFFICE BOX 655303

description (continued)

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 overflow drain pin. With this type of blooming

protection it is also possible to clear the image area of charge completely. This is accomplished by providing

a single 10-V pulse of at least 1

µs duration to the overflow drain pin.

The TC281 image sensor uses TI-proprietary advanced virtual-phase (AVP) technology, the advanced lateral

overflow drain, and the BCD detection node. These features provide the TI image sensing devices with a high

blue response, high near-IR sensitivity, low dark current, high photoresponse uniformity, and single-phase

clocking. The TC281 is characterized for operation from -10

_C to 45_C.

functional block diagram

Top Drain

Image Area

Storage Area

Serial Register

and Transfer Gate

Clearing Drain

21

20

5

15

14

TDB

10

11

12

8

8

9

13

Amplifier

6

3

2

ODB

IAG

SAG

VSOURCE

ADB

OUT

RST

Vgate

CDB

IAG

SAG

SRG

TRG