TC253SPD-30 Datasheet, PDF (10/21 Pages) Texas Instruments – 680 x 500 PIXEL IMPACTRON CCD IMAGE SENSOR

TC253SPDĆ30
680 × 500 PIXEL IMPACTRON CCD IMAGE SENSOR
JULY 2003 − SOCS085
optical characteristics, T_A = 25°C (unless otherwise noted)
PARAMETER
MIN TYP MAX UNIT
Sensitivity with typical CCM gain (see Note 11)
No IR filter
With IR filter
290
V/Lx*s
36
Sensitivity without CCM gain (see Note 11)
No IR filter
With IR filter
9.6
V/Lx*s
1.2
Vsat
Saturation signal output without CCM gain (see Note 12)
Handling capacity of charge multiplier
300
400
mV
400
500
Voff
Zero-input offset output (see Note 13)
Blooming overload ratio (see Note 14)
Image area well capacity
90
200 mV
1000:1
33k
44k
e-/pixel
Smear (see Note 15)
Dark current (see Note 16 and Note 21)
60
dB
0.01
0.03 nA/cm2
Dark signal (see Note 17 and Note 21)
0.005 0.015 mV
Dark-signal uniformity (see Note 18)
0.15 mV
Dark-signal shading (see Note 19)
0.1 mV
Spurious nonuniformity
Dark
Illuminated
0.8
1.5 mV
− 20
20 %
Column uniformity (see Note 20)
4.5 mV
Electronic-shutter capability
1/5000 1/30
s
NOTES: 11. Light source temperature is 2856 °K. The IR filter used is CM500, 1-mm thick.
12. Saturation is the condition in which further increase in exposure does not lead to further increases in output signal.
13. 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. It may vary with the amplitude of SRG.
14. Blooming is the condition in which charge induced by light in one element spills over to the neighboring elements.
15. 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 an integration time of 16.66 ms and
a 3.125-MHz vertical-clock transfer frequency.
16. Dark current depends on temperature and approximately doubles every 8 ^oC. Dark current is also multiplied by CCM operation. The
value given in the table is with the multiplier turned off and it is a calculated value.
17. Dark signal is actual device output measured in darkness.
18. Dark signal uniformity is the sigma of the difference between two neighboring pixels taking from all the image area pixels.
19. Dark signal shading is the difference between maximum and minimum of a 5-pixel median taken anywhere in the array.
20. Column uniformity is obtained by summing all the lines in the array, finding the maximum of the difference between two neighboring
columns anywhere in the array, and dividing the result by the number of lines.
21. There will be an estimated 20% degradation in dark current performance when exposed to 320 nm UV light at 1 uWatt/cm2 for
2700 hours.
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