TC253SPD

680×500 PIXEL CCD IMAGE SENSOR

SOCS062B – JANUARY 2001 – REVISED MAY 2002

11

POST OFFICE BOX 655303

PARAMETER

MIN

TYP

MAX

UNIT

Sensitivity with typical CCM gain (see Note 8)

No IR filter

240

V/Lux

Sensitivity with typical CCM gain (see Note 8)

With IR filter

33

V/Lux

Sensiti it

itho t CCM gain (see Note 8)

No IR filter

8

V/L

Sensitivity without CCM gain (see Note 8)

With IR filter

1.1

V/Lux

Vsat

Saturation signal output no CCM gain (see Note 9)

260

mV

Vsat

Saturation signal output with typical CCM gain (see Note 9)

440

mV

Voff

Zero input offset output (see Note 10)

200

mV

Blooming overload ratio (see Note 11)

1000:1

Image area well capacity

26k

Smear (see Note 12)

66

dB

Dark current (see Note 13)

0.15

0.90

nA/cm2

Dark signal (see Note 14)

0.08

0.50

mV

Dark-signal uniformity (see Note 15)

0.3

mV

Dark-signal shading (see Note 16)

0.4

mV

Spurious nonuniformity

Dark

0.8

mV

Spurious nonuniformity

Illuminated

–20%

20%

Column uniformity (see Note 17)

0.2

mV

Electronic-shutter capability

1/5000

1/60

s

NOTES:

8. Light source temperature is 2856

°K. The IR filter used is CM500 1 mm thick.

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

10. Zero-input offset is the residual output signal measured from the reset level with no input charge present. This level is not caused

by the dark current and remains approximately constant, independent of temperature. This level can vary with the amplitude of

SRG2.

11. Blooming is the condition in which charge induced by light in one element spills over to the neighboring elements.

12. Smear is the measure of error signal introduced into the pixels by transferring them through the illuminated region into the memory.

The illuminated region is 1/10 of the image area height. The value in the table is obtained for the integration time of 16.66 ms and

3.125 MHz vertical clock transfer frequency.

13. Dark current depends on temperature and approximately doubles every 8

°C. Dark current is also multiplied by the CCM operation.

The value given in the table is with the multiplier turned off, and it is a calculated value.

14. Dark signal is actual device output measured in darkness.

15. Dark signal uniformity is the sigma of difference of two neighboring pixels taken from all the image area pixels.

16. Dark signal shading is the difference between maximum and minimum of a 5-pixel median taken anywhere in the array.

17. Column uniformity is obtained by summing all the lines in the array, finding the maximum of the difference of two neighboring columns

anywhere in the array, and dividing the result by the number of lines.