TC277 Datasheet, PDF (8/19 Pages) Texas Instruments – 735- × 580-PIXEL CCD IMAGE SENSOR

TC277
735- × 580-PIXEL CCD IMAGE SENSOR
SOCS020B – DECEMBER 1991
spurious-nonuniformity specification
The spurious-nonuniformity specification of the TC277 CCD grades – 10, – 20, – 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)
– Area A
– Element columns near horizontal center of the area
– Element rows near vertical center of the area
– Area B
– Up to the pixel or line border
– Up to area A
– Other
– Edge of the imager
– Up to area B
• Nonuniform pixel count
• Distance between nonuniform pixels
• Column amplitude
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.
17 Pixels
332
Pixels
278
Lines
A
B
9 Lines
13 Lines
17 Pixels
Figure 5. Sensor-Area Map
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