TC245 Datasheet, PDF (9/19 Pages) Texas Instruments – 786- × 488-pixel ccd image sensor

mV
Amplitude
TC245
786- × 488-PIXEL CCD IMAGE SENSOR
SOCS019A – DECEMBER 1991
% of Total
Illumination
t
Figure 8. Pixel Nonuniformity,
Dark Condition
t
Figure 9. Pixel Nonuniformity,
Illuminated Condition
The grade specification for the TC245 is as follows (CCD video-output signal is 50 mV ±10 mV):
Pixel nonuniformity:
PART
NUMBER
DARK CONDITION
PIXEL
AMPLITUDE, x
(mV)
NONUNIFORM PIXEL TYPE
WHITE BLACK W/B†
AREA AREA AREA
ABABAB
ILLUMINATED CONDITION
TOTAL
% OF TOTAL
ILLUMINATION ^{AREA A AREA B}
COUNT‡
DISTANCE
SEPARATION
X Y AREA
TC245-20
x > 3.5
000000
x>5
0
0
—
——
—
2.5 < x ≤ 3.5 2 5 2 5 2 5 5.0 < x ≤ 7.5
2
5
TC245-30
12
100 80
A
x > 3.5
000000
x > 7.5
0
0
3.5 < x ≤ 7
373737
7.5 < x ≤ 15
3
7
TC245-40
15
——
—
x>7
000000
x > 15
0
0
† _{White and black nonuniform pixel pair}
‡ _{The total spot count is the sum of all nonuniform white, black, and white/black pairs in the dark condition added to the number of nonuniform black}
pixels in the illuminated condition. The sum of all nonuniform combinations will not exceed the total count.
Column nonuniformity:
PART
COLUMN
AMPLITUDE, x
NUMBER
(mV)
TC245-20
TC245-30
TC245-40
x > 0.3
x > 0.5
x > 0.7
WHITE
AREAS
A AND B
0
0
0
BLACK
AREAS
A AND B
0
0
0
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