TC237B

680-

× 500-PIXEL CCD IMAGE SENSOR

SOCS063 – APRIL 2001

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

TA =45°C

320

mV

Maximum usable signal, Vuse

Antiblooming enabled

TA =45°C

120

mV

Blooming overload ratio (see Note 11)

500

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 = 45°C

1

mV

Dark-signal uniformity

TA = 45°C

0.5

mV

Dark-signal shading

TA = 45°C

0.5

mV

Spurious nonuniformity

Dark

TA = 45°C

10

mV

Spurious nonuniformity

Illuminated, F#8

TA = 45°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.

TYPICAL CHARACTERISTICS

Wavelength [nm]

0.4

0.2

0

400

500

600

700

800

900

1000

1100

Responsivity [A/W]

TC237B Spectral Responsivity

16.6 ms T-int (diagonal lines represent QE)

20%

DATA

40%

60%

Figure 9. Spectral Characteristics of the TC237B CCD Sensor