Xerox DocuMate 252 Service Manual page 16

2. CCD signal processing circuit
R
G
CCD
B
The CCD signal processor includes all the necessary circuitry to perform three-
channel conditioning and sampling. The signal chain consists of three-channel
correlated double sampling (CDS) and programmable gain adjustment of the CCD
output (PGA) is a 16 bit analog to digital connector (ADC) quantizes the analog
signal.
CDS PGA
CDS PGA MUX
CDS PGA
CCD Signal Processor
3-5
Service Manual
Dout
ADC