TC236

680-

× 500-PIXEL CCD IMAGE SENSOR

SOCS043A – JUNE 1994 – REVISED NOVEMBER 1994

12

POST OFFICE BOX 655303

PARAMETER

MIN

TYP

MAX

UNIT

Sensitivity (see Note 9)

No IR filter

256

mV/lux

Sensitivity (see Note 9)

With IR filter

32

mV/lux

Saturation signal, Vsat (see Note 10)

Antiblooming disabled

600

mV

Maximum usable signal, Vuse

Antiblooming enabled

300

400

500

mV

Blooming overload ratio (see Note 11)

1000

Image-area well capacity

22K

30K

38K

electrons

Smear (see Note 12)

See Note 13

–78

dB

Dark current

TA = 21°C

0.05

nA/cm2

Dark signal

TA = 60°C

1

mV

Dark-signal uniformity

TA = 60°C

0.5

mV

Dark-signal shading

TA = 60°C

0.5

mV

Spurious nonuniformity

Dark

TA = 60°C

10

mV

Spurious nonuniformity

Illuminated, F#8

TA = 60°C

15

%

Column uniformity

0.5

mV

Electronic-shutter capability

1/50,000

1/60

s

NOTES:

9. Theoretical value

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

11. 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.

12. 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.

13. 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

the height of the image section.