TC240 Datasheet, PDF (12/19 Pages) Texas Instruments – 780- × 488-PIXEL CCD IMAGE SENSOR

TC240
780- × 488-PIXEL CCD IMAGE SENSOR
SOCS005A – OCTOBER 1985 – REVISED DECEMBER 1991
optical characteristics, T_A = 40°C and integration time = 16.67 ms (unless otherwise noted)
PARAMETER
MIN
TYP
MAX UNIT
Sensitivity
Red
Green
Blue
Measured at VU
(see Notes 10 and 11)
120
mV/lx
0.9
mV
0.6
Saturation signal, Vsat
(see Note 12)
Antiblooming disabled, interlace off
320
400
mV
Maximum usable signal, Vuse Antiblooming enabled, interlace on
Blooming overload ratio (see Note 13)
Interlace on
Interlace off
Image-area well capacity
180
360
100
200
200 x 103
mV
electrons
Smear (see Note 14)
Dark current
Interlace off
See Note 15
TA = 21°C
TC240-10
0.00072
0.027
nA/cm2
15
Dark signal (see Note 16)
TA = 45°C
TC240-30
TC240-40
15 mV
20
TC240-10
2.5
Pixel uniformity
Output signal = 50 mV ±10 mV TC240-30
3.5 mV
TC240-40
5
TC240-10
0.3
Column uniformity
Output signal = 50 mV ±10 mV TC240-30
0.5 mV
TC240-40
0.7
Shading
Output signal = 100 mV
17%
NOTES: 10. The following standard imaging condition is used in the test: light box SA702 (made by Canon) is used with a lens (FL = 92 mm)
stopped to f14.3. The light power is 1.5 µW/cm2 (color temperature = 3000 K). No IR filter is used.
11. VU is the output voltage that represents the threshold of operation of antiblooming. VU ≈ 1/2 saturation signal.
12. Saturation is the condition in which further increase in exposure does not lead to further increase in output signal.
13. Blooming overload ratio is the ratio of blooming exposure to saturation exposure.
14. Smear is a measure of the error induced by transferring charge through an illuminated pixel in shutterless operation. It is equivalent
to the ratio of the single-pixel transfer time during a fast dump to the exposure time using an illuminated section that is 1/10 of the
image- area vertical height with recommended clock frequencies.
15. Exposure time is 16.67 ms and the fast dump clocking rate during vertical timing is 2.05 MHz.
16. Dark signal level is measured from the dummy pixels.
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