XRD98L23 Datasheet, PDF (16/32 Pages) Exar Corporation – 8-Bit, High-speed Linear CIS/CCD Sensor Signal Processor with Serial Control

XRD98L23
Internal CIS Reference Circuit (DB 4 = 1)
The XRD98L23 has an internal register reserved for
interfacing to the Canon CIS model number CVA-
60216K. When this register is selected, the VDCEXT
(Pin 16) becomes an output voltage of 1.24 volts. This
voltage can be directly connected to the VREF (Pin 5)
of the Canon sensor. This reduces the amount of
components needed for biasing the Canon CIS sensor
(the external diodes and resistors typically used in this
application have been included inside the XRD98L23
for this mode of operation). Below is a typical applica-
tion circuit using the XRD98L23 and the Canon CVA-
60216K CIS sensor.
AGN
D
N/C
N/C
0.1u
F
AVD
D
19 _RED
18 _GRN
17 _BLU
16 VDCEX
T
15 _VREF+
DDBB67//LD
9
8
DSBD5A/STCALK
DB4
DB3
DB2
DB1
7
6
5
4
3
2
DB0
ADCCL
K
CLAM
P
SYNC
H
11
12
13
DVDD (3V )
20 AVD
D
14 AGN
D
DVDD
1
10
DGND
XRD98L23
DIGITAL
ASIC
DGND
VCC (5V)
DVDD (3V - 5V)
NPN
DGND
NPN
DGND
NPN
DGND
47u
F
0.01u
F
100u
F
AGN
D
CANON CIS
SENSOR
1 VOU
T
2 MOD
E
3 AGN
D
4 _VCC
5 _VREF
6 _SP
7 _CLK
8
LED
COM
9 _{LED BLU}
10 _{LED GRN}
11 _{LED RED}
12 _FGND
DGND
CVA-60216K
Figure 10. Typical Application Circuitry Internal CIS Reference Circuit Mode
CANON CIS Sensor, Model #CVA=60216K
Rev. 1.00
16