TC221 Datasheet, PDF (8/14 Pages) Texas Instruments – SMALL-FORMAT CCD IMAGE SENSORS

TC221, TC225, TC227
SMALL-FORMAT CCD IMAGE SENSORS
SOCS037C – DECEMBER 1991 – REVISED AUGUST 1997
spurious-nonuniformity specification
The spurious-nonuniformity specification of the TC221, TC225 and TC227 grades – 30 and – 40 is based on
several sensor characteristics:
• Amplitude of the nonuniform pixel
• Polarity of the nonuniform pixel
— Black
— White
• Location of the nonuniformity (see Figure 5)
• Nonuniform pixel count
The CCD sensors are 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 6. In the illuminated condition,
the nonuniformity is specified as a percentage of the total illumination as shown in Figure 7.
TC221 nonuniformity table
PART NUMBER
TC221-30
TC221-40
TC221-30
TC221-40
TC221-30
TC221-40
PIXEL
AMPLITUDE
8 –12 mV
12 –16 mV
> 16 mV
DARK CONDITION
PIXEL COUNT
AREA A
AREA B
4
6
8
12
2
4
4
8
0
0
0
0
ILLUMINATED CONDITION
% OF TOTAL
ILLUMINATION
PIXEL COUNT
AREA A
AREA B
4
6
30 – 40
8
12
2
4
40 – 50
4
8
0
0
> 50
0
0
TC225 nonuniformity table
PART NUMBER
TC225-30
TC225-40
TC225-30
TC225-40
TC225-30
TC225-40
PIXEL
AMPLITUDE
8 –12 mV
12 –16mV
> 16 mV
DARK CONDITION
PIXEL COUNT
AREA A
AREA B
6
9
12
15
3
6
6
10
0
0
0
0
ILLUMINATED CONDITION
% OF TOTAL
ILLUMINATION
PIXEL COUNT
AREA A
AREA B
6
9
30 – 40
12
15
3
6
40 – 50
6
10
0
0
> 50
0
0
TC227 nonuniformity table
PART NUMBER
TC227-30
TC227-40
TC227-30
TC227-40
TC227-30
TC227-40
PIXEL
AMPLITUDE
8 –12 mV
12 –16 mV
> 16 mV
DARK CONDITION
PIXEL COUNT
AREA A
AREA B
4
6
8
12
2
4
4
8
0
0
0
0
ILLUMINATED CONDITION
% OF TOTAL
ILLUMINATION
PIXEL COUNT
AREA A
AREA B
4
6
30 – 40
12
12
2
4
40 – 50
4
8
0
0
> 50
0
0
8
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