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a
AD9824
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Analog Devices, Inc., 2002
Complete 14-Bit 30 MSPS
CCD Signal Processor
FUNCTIONAL BLOCK DIAGRAM
DATACLK
SHD
SHP
2:1
MUX
DOUT
AUX2IN
CLPDM
CCDIN
AUX1IN
INTERNAL
TIMING
2dB~36dB
AVDD
DVDD
DVSS
AVSS
DRVDD
DRVSS
10
8
DIGITAL
INTERFACE
SDATA
SCK
SL
CDS
VGA
BUF
2:1
MUX
CLP
AD9824
CLP
ADC
4dB
6dB
COLOR
STEERING
HD
VD
PxGA
6
BAND GAP
REFERENCE
VRT
VRB
CLP
14
BLK CLAMP
LEVEL
CONTROL
REGISTERS
CLPOB
PBLK
FEATURES
14-Bit 30 MSPS A/D Converter
30 MSPS Correlated Double Sampler (CDS)
4 dB
6 dB 6-Bit Pixel Gain Amplier (
PxGA)
2 dB to 36 dB 10-Bit Variable Gain Amplier (VGA)
Low Noise Clamp Circuits
Analog Preblanking Function
Auxiliary Inputs with VGA and Input Clamp
3-Wire Serial Digital Interface
3 V Single-Supply Operation
Low Power: 153 mW @ 3 V Supply
Space-Saving 48-Lead LFCSP Package
APPLICATIONS
High Performance Digital Still Cameras
Industrial/Scientific Imaging
PRODUCT DESCRIPTION
The AD9824 is a complete analog signal processor for CCD
applications. It features a 30 MHz single-channel architecture
designed to sample and condition the outputs of interlaced and
progressive scan area CCD arrays. The AD9824’s signal chain
consists of an input clamp, a correlated double sampler (CDS),
PxGA, a digitally controlled VGA, a black level clamp, and a
14-bit A/D converter. Additional input modes are also pro-
vided for processing analog video signals.
The internal registers are programmed through a 3-wire
serial digital interface. Programmable features include gain
adjustment, black level adjustment, input conguration, and
power-down modes.
The AD9824 operates from a single 3 V power supply, typically
dissipates 153 mW, and is packaged in a 48-lead LFCSP.
PxGA is a registered trademark of Analog Devices, Inc.