XRD9825 datasheet(21/33 Pages) EXAR

Part #	XRD9825

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

PDF	33 Pages

Scroll/Zoom	100%

Manufacturer	EXAR [Exar Corporation]

Direct Link	http://www.exar.com

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21 / 33 page

XRD9825

Rev. 1.00

tdv

AREA, LINEAR or B/W CCD -- AC Coupled

(CLAMP Enabled)

Pixel N-1

Pixel N

Pixel N+1

CCD

Channel N

ADCCLK

tckpd

tap

tckhw

tcklw

CLAMP

tclpw

N-8

MSB

N-8

LSB

N-7

MSB

N-7

LSB

N-6

MSB

N-6

LSB

[5:0]

[11:6]

Figure 15. Timing Diagram for Figure 14

Triple Channel CCD Application

Figure 6 is a block diagram for pixel-by-pixel applica-

tions with triple channel CCDs. During the optically

shielded section of a pixel, CLAMP must go high to

store the black reference on each capacitor to the input.

The gain and offset is automatically rotated to adjust for

each channel input. The MSBs (8 upper bits) are

available on the output bus on the falling edge of

ADCCLK. The LSBs (8 lower bits) are available on the

rising edge of ADCCLK.

Note: There is an 8 clock latency at the output.

XRD9825 Datasheet(PDF) 21 Page - Exar Corporation

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