AD9995 Analog Devices, AD9995 Datasheet

AD9995

Manufacturer Part Number

AD9995

Description

12-Bit CCD Signal Processor with Precision Timing Generator

Manufacturer

Analog Devices

Datasheet

1.AD9995.pdf (60 pages)

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Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

that may result from its use. No license is granted by implication or oth-

erwise under any patent or patent rights of Analog Devices.Trademarks

and registered trademarks are the property of their respective owners.

FEATURES

6-Phase Vertical Transfer Clock Support

Correlated Double Sampler (CDS)

6 dB to 42 dB 10-Bit Variable Gain Amplifier (VGA)

12-Bit 36 MHz A/D Converter

Black Level Clamp with Variable Level Control

Complete On-Chip Timing Generator

Precision Timing Core with <600 ps Resolution

On-Chip 3 V Horizontal and RG Drivers

2-Phase and 4-Phase H-Clock Modes

Electronic and Mechanical Shutter Modes

On-Chip Driver for External Crystal

On-Chip Sync Generator with External Sync Input

56-Lead LFCSP Package

APPLICATIONS

Digital Still Cameras

Digital Video Camcorders

Industrial Imaging

VSG1–VSG5

H1–H4

CCDIN

V1–V6

CDS

VSUB SUBCK

HORIZONTAL

CONTROL

DRIVERS

FUNCTIONAL BLOCK DIAGRAM

V-H

6dB TO 42dB

VGA

INTERNAL CLOCKS

12-Bit CCD Signal Processor with

GENERATOR

PRECISION

TIMING

SYNC

VD SYNC

GENERAL DESCRIPTION

The AD9995 is a highly integrated CCD signal processor for

digital still camera and camcorder applications. It includes a

complete analog front end with A/D conversion, combined with a

full-function programmable timing generator. The timing genera-

tor is capable of supporting both 4- and 6-phase vertical clocking.

A Precision Timing core allows adjustment of high speed clocks

with less than 600 ps resolution at 36 MHz operation.

The AD9995 is specified at pixel rates of up to 36 MHz. The

analog front end includes black level clamping, CDS, VGA,

and a 12-bit A/D converter. The timing generator provides all

the necessary CCD clocks: RG, H-clocks, V-clocks, sensor gate

pulses, substrate clock, and substrate bias control. Operation is

programmed using a 3-wire serial interface.

Packaged in a space-saving 56-lead LFCSP, the AD9995 is speci-

fied over an operating temperature range of –20°C to +85°C.

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

Tel: 781/329-4700

Fax: 781/326-8703

VRT

Precision Timing

VREF

VRB

CLI

CLAMP

CLO

12-BIT

ADC

REGISTERS

SL SCK DATA

INTERNAL

AD9995

DCLK

MSHUT

STROBE

DOUT

™

Generator

AD9995

www.analog.com

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