AD9843A Analog Devices, AD9843A Datasheet
AD9843A
Manufacturer Part Number
AD9843A
Description
Complete 10-Bit 20 MSPS CCD Signal Processor
Manufacturer
Analog Devices
Datasheet
1.AD9843A.pdf
(16 pages)
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a
AUX1IN
AUX2IN
CLPDM
CCDIN
PBLK
CLP
AD9843A
CLP
4dB 6dB
CDS
MUX
2:1
AVDD
BUF
FUNCTIONAL BLOCK DIAGRAM
AVSS
SL
MUX
2:1
REGISTERS
INTERFACE
INTERNAL
DIGITAL
6
SCK
PRODUCT DESCRIPTION
The AD9843A is a complete analog signal processor for CCD
applications. It features a 20 MHz single-channel architecture
designed to sample and condition the outputs of interlaced and
progressive scan area CCD arrays. The AD9843A’s signal chain
consists of an input clamp, correlated double sampler (CDS),
digitally controlled variable gain amplifier (VGA), black level
clamp, and 10-bit A/D converter. Additional input modes are
provided for processing analog video signals.
The internal registers are programmed through a 3-wire serial
digital interface. Programmable features include gain adjust-
ment, black level adjustment, input configuration, and power-
down modes.
The AD9843A operates from a single 3 V power supply, typi-
cally dissipates 78 mW, and is packaged in a 48-lead LQFP.
2dB~36dB
VGA
SDATA
10
OFFSET
DAC
Complete 10-Bit 20 MSPS
8
SHP
CLPOB
CCD Signal Processor
CLP
10-BIT
ADC
INTERNAL
REFERENCE
TIMING
BANDGAP
INTERNAL
SHD
BIAS
DATACLK
10
DRVDD
DRVSS
DOUT
VRT
VRB
CML
DVDD
DVSS
AD9843A