XRD9827 Datasheet, PDF (17/32 Pages) Exar Corporation – 12-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control

XRD9827
CIS Line-By-Line Rotating Gain and Offset
(Configuration DB1 = 1, DB0 = 1)
Line-by-line rotating gain and offset minimizes the
amount of write cycles per scan. Pre-loaded values of
gain and offset can be loaded for each color before the
first line is scanned. Each gain and offset is cycled
through line-by-line so that the gain and offset do not
have to be loaded in between lines. Below is the typical
application circuit and timing for this configuration.
VCC (5V - 15V)
C
I
S
AGND
N/C
19 _RED
18
GRN
17
BLU
16 _VDCEXT
0.1uF
AVDD
15
VREF+
20 _AVDD
14 _AGND
DB7/LD
9
8
DB6/SDATA
7
DB5/SCLK
6
DB4
5
DB3
4
DB2
3
DB1
DB0
2
11
ADCCLK
12
CLAMP
13
SYNCH
DVDD (3V - 5V)
DVDD
1
DGND
10
XRD9827
DIGITAL
ASIC
DGND
Figure 11. Typical Application Circuitry Internal CIS Rotating Gain
and Offset Line-By-Line
Rev. 1.20
17