REV. 0

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a

AD9824

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

www.analog.com

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 Amplifier (

2 dB to 36 dB 10-Bit Variable Gain Amplifier (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 configuration, 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.