TC253 Datasheet, PDF (11/19 Pages) Texas Instruments – 680x500 PIXEL CCD IMAGE SENSOR

TC253SPD
680ā×ā500 PIXEL CCD IMAGE SENSOR
SOCS062B – JANUARY 2001 – REVISED MAY 2002
optical characteristics, T_A = 40°C (unless otherwise noted)
PARAMETER
MIN
TYP MAX UNIT
Sensitivity with typical CCM gain (see Note 8)
No IR filter
With IR filter
240
V/Lux
33
Sensitivity without CCM gain (see Note 8)
No IR filter
With IR filter
8
V/Lux
1.1
Vsat
Vsat
Voff
Saturation signal output no CCM gain (see Note 9)
Saturation signal output with typical CCM gain (see Note 9)
Zero input offset output (see Note 10)
Blooming overload ratio (see Note 11)
260
mV
440
mV
200
mV
1000:1
Image area well capacity
26k
Smear (see Note 12)
Dark current (see Note 13)
0.15
0.90
66 dB
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
Illuminated
0.8
–20%
mV
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.
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