TC221, TC225, TC227

SMALL-FORMAT CCD IMAGE SENSORS

SOCS037C – DECEMBER 1991 – REVISED AUGUST 1997

8

POST OFFICE BOX 655303

spurious-nonuniformity specification

The spurious-nonuniformity specification of the TC221, TC225 and TC227 grades – 30 and – 40 is based on

several sensor characteristics:

— Black

— White

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

DARK CONDITION

ILLUMINATED CONDITION

PART NUMBER

PIXEL

PIXEL COUNT

% OF TOTAL

PIXEL COUNT

AMPLITUDE

AREA A

AREA B

ILLUMINATION

AREA A

AREA B

TC221-30

812 mV

4

6

30 40

4

6

TC221-40

8 –12 mV

8

12

30 – 40

8

12

TC221-30

12 16 mV

2

4

40 50

2

4

TC221-40

12 –16 mV

4

8

40 – 50

4

8

TC221-30

>16mV

0

0

>50

0

0

TC221-40

> 16 mV

0

0

> 50

0

0

TC225 nonuniformity table

DARK CONDITION

ILLUMINATED CONDITION

PART NUMBER

PIXEL

PIXEL COUNT

% OF TOTAL

PIXEL COUNT

AMPLITUDE

AREA A

AREA B

ILLUMINATION

AREA A

AREA B

TC225-30

812 mV

6

9

30 40

6

9

TC225-40

8 –12 mV

12

15

30 – 40

12

15

TC225-30

12 16mV

3

6

40 50

3

6

TC225-40

12 –16mV

6

10

40 – 50

6

10

TC225-30

>16mV

0

0

>50

0

0

TC225-40

> 16 mV

0

0

> 50

0

0

TC227 nonuniformity table

DARK CONDITION

ILLUMINATED CONDITION

PART NUMBER

PIXEL

PIXEL COUNT

% OF TOTAL

PIXEL COUNT

AMPLITUDE

AREA A

AREA B

ILLUMINATION

AREA A

AREA B

TC227-30

812 mV

4

6

30 40

4

6

TC227-40

8 –12 mV

8

12

30 – 40

12

12

TC227-30

12 16 mV

2

4

40 50

2

4

TC227-40

12 –16 mV

4

8

40 – 50

4

8

TC227-30

>16mV

0

0

>50

0

0

TC227-40

> 16 mV

0

0

> 50

0

0