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參數(shù)資料
| 型號(hào)： | TC255 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, CDIP8 |
| 封裝： | 2.54 MM PITCH, WINDOWED, CERAMIC, DIP-8 |
| 文件頁(yè)數(shù)： | 16/18頁(yè) |
| 文件大?。?/td> | 242K |
| 代理商： | TC255 |
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TC255
336-
× 244-PIXEL CCD IMAGE SENSOR
SOCS034C – FEBRUARY 1993 – REVISED NOVEMBER 1994
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
spurious nonuniformity specification
The spurious nonuniformity specification of the TC255 is based on several sensor characteristics:
Amplitude of the nonuniform pixel
Polarity of the nonuniform pixel
–
Black
–
White
Column amplitude
The CCD sensor is characterized in both an illuminated condition and a dark condition. In the dark condition,
the nonuniformity is specified in terms of absolute amplitude as shown in Figure 5. In the illuminated condition,
the nonuniformity is specified as a percentage of the total illumination as shown in Figure 6.
The specification for the TC255 is as follows:
WHITE SPOT
(DARK)
WHITE SPOT
(ILLUMINATED)
COLUMN
(DARK)
COLUMN
(ILLUMINATED)
BLACK SPOT
(ILLUMINATED)
WHITE/BLACK
PAIR
x < 15 mV
x < 15%
x < 0.5 mV
x < 1 mV
x < 15%
x < 9mV
A white/black pair nonuniformity is no more than 2 pixels even for integration times of 1/60 second.
The conditions under which this specification is defined are as follows:
1.
The integration time is 1/60 second except for illuminated white spots, illuminated black spots and
white/black pair nonuniformities; in these three cases the integration time is 1/240 second.
2.
The temperature is 45
°C.
3.
The CCD video-output signal is 60 mV
± 10 mV.
mV
Amplitude
t
Illumination
% of Total
t
Figure 5. Pixel Nonuniformity,
Figure 6. Pixel Nonuniformity,
Dark Condition
Illuminated Condition
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