XRD9825 데이터 시트보기 (PDF) - Exar Corporation

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XRD9825

16-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control

Exar Corporation 

XRD9825

AREA

or

RED

LINEAR

N/C

M

CCD

N/C

U

N/C

X

CLAMP

XRD9825

VDD

VRT

RL

VRB

Figure 13. CCD AC Coupled Application

Area or Linear CCD Applications

Figure 13 is a block diagram for applications with Area

or Linear CCDs (The timing for Area CCDs and B/W

CCDs is the same). For Area or Linear CCD applica-

tions, a global offset is loaded into the serial port at the

beginning of a line. The gain is set to adjust for the

highest color intensity of the CCD output. Once the

pixel values have been sampled, the gain and offset are

adjusted at the beginning of the next line. For example,

if there is a line-to-line variation between the black

reference pixels, the offset is adjusted. The gain is

always adjusted for the highest color intensity.

Rev. 1.00

19

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