LM9830VJDX NSC [National Semiconductor], LM9830VJDX Datasheet - Page 42

• Manufacturer Part Number: LM9830VJDX
• Description: LM9830 36-Bit Color Document Scanner
• Manufacturer: NSC [National Semiconductor]

Analog Front End Block Diagram
V
V
V
V
GREEN OS
REF MID FORCE
V
REF MID SENSE
V
from CCD
REF LO FORCE
REF LO SENSE
BLUE OS
from CCD
from CCD
REF HI FORCE
REF HI SENSE
RED OS
V
BANDGAP
OS
OS
OS
R
G
B
Reference
Bandgap
Internal
2.5V
1
-1
1
-1
1
-1
CDS
CDS
CDS
Boost
x1or x3
x1or x3
x1or x3
Gain
Offset
+
Offset
DAC
+
Offset
DAC
+
Offset
Static
DACs
DAC
+
+
+
²
²
R
G
B
Balance PGAs
Coarse Color
x0.93
x0.93
x0.93
to x3
to x3
to x3
12-Bit
ADC
ø1
ø2
RS
CP1
CP2
TR1
TR2