TC255P

336-

× 244-PIXEL CCD IMAGE SENSOR

SOCS057 – JUNE 1996

2-10

POST OFFICE BOX 655303

PARAMETER

MIN

TYP

MAX

UNIT

Sensitivity

No IR filter

350

mV/lx

Sensitivity

With IR filter

45

mV/lx

Saturation signal, Vsat (see Note 11)

Antiblooming disabled, Interlace off

600

750

mV

Maximum usable signal, Vuse

Antiblooming enabled

200

250

mV

Blooming-overload ratio (see Note 12)

100

200

Image-area well capacity

50000

62500

electrons

Smear (see Notes 13 and 14)

0.00012

Dark current

Interlace disabled,

TA = 21°C

0.20

nA/cm2

Dark signal

200

µV

Pixel uniformity

Output signal = 60 mV

± 10 mV

15

mV

Column uniformity

Output signal = 60 mV

± 10 mV

0.5

mV

Shading

15

%

Electronic-shutter capability

1/15000

1/60

s

NOTES: 11. Saturation is the condition in which further increase in exposure does not lead to further increase in output signal.

12. Blooming is the condition in which charge is induced in an element by light incident on another element. Blooming-overload ratio

is the ratio of blooming exposure to saturation exposure.

13. Smear is a measure of the error introduced by transferring charge through an illuminated pixel in shutterless operation. It is equivalent

to the ratio of the single-pixel transfer time to the exposure time using an illuminated section that is 1/10 of the image-area vertical

height with recommended clock frequencies.

14. The exposure time is 16.67 ms, the fast-dump clocking rate during vertical transfer is 12.5 MHz, and the illuminated section is 1/10

of the height of the image section.

timing requirements

MIN

NOM

MAX

UNIT

ABG

10

40

IAG1, IAG2 (fast clear)

10

10

tr

Rise time

IAG1, IAG2 (image transfer)

10

20

ns

SAG

10

20

SRG

10

40

ABG

10

40

IAG1, IAG2 (fast clear)

10

10

tf

Fall time

IAG1, IAG2 (image transfer)

10

20

ns

SAG

10

20

SRG

10

40