TC244A Datasheet, PDF (12/19 Pages) Texas Instruments – 786- × 488-PIXEL CCD IMAGE SENSOR

TC244A
786- × 488-PIXEL CCD IMAGE SENSOR
SOCS056 – JUNE 1996
optical characteristics, T_A = 40°C (unless otherwise noted)
PARAMETER
MIN
TYP
MAX UNIT
Red
160
mV/lx
Sensitivity
Green
Blue
See Notes 10 and 11
90
% of red
60
Saturation signal, Vsat (see Note 12) Antiblooming disabled, interlace off
Maximum usable signal, Vuse
Antiblooming enabled, interlace on
Blooming-overload ratio (see Note 13)
Interlace on
Interlace off
Image-area well capacity
320
180
100
200
80 x 103
mV
mV
electrons
Smear (see Note 14)
Dark current
Dark signal (see Note 16)
Interlace off
TA = 45°C
See Note 15
TA = 21°C
TC244A-30
TC244A-40
0.027
0.0004
5.5
6
nA/cm2
mV
Pixel uniformity
TC244A-30
Output signal = 50 mV ±10 mV
TC244A-40
3.5
mV
5
Column uniformity
TC244A-30
Output signal = 50 mV ±10 mV
TC244A-40
0.5
mV
0.7
Shading
Output signal = 100 mV
15%
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. The following measurement method is used: the device blooming protection is disabled by lowering the ABG-clock-pulse amplitude
to the minimum value. The red-output-signal level (Sr), the blue-output-signal level (Sb), and the green-output-signal level (Sg) are
recorded. The relative sensitivity for the blue-output-signal (Rb) and the relative sensitivity for the green-output-signal (Rg) are
determined as follows:
Rb = Sb/Sr and Rg = Sg/Sr
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, the fast dump-clocking rate during vertical timing is 3.58 MHz, and the illuminated section is 1/10 of the
height of the image section.
16. Dark-signal level is measured from the dummy pixels.
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