AD9944 datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > semiconductor> Other integrated circuit (IC)> AD9944

AD9944: DescriptionSPECIALTY CONSUMER CIRCUIT, QCC32; Categorysemiconductor Other integrated circuit (IC); File Size324KB，20 Pages; ManufacturerADI; Websitehttps://www.analog.com

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AD9944 Overview

SPECIALTY CONSUMER CIRCUIT, QCC32

AD9944 Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	32
Maximum operating temperature	85 Cel
Minimum operating temperature	-20 Cel
Maximum supply/operating voltage	3.6 V
Minimum supply/operating voltage	2.7 V
Processing package description	5 X 5 MM, LEAD FREE, MO-220-VHHD-2, LFCSP-32
Lead-free	Yes
EU RoHS regulations	Yes
China RoHS regulations	Yes
state	ACTIVE
packaging shape	SQUARE
Package Size	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
surface mount	Yes
Terminal form	NO LEAD
Terminal spacing	0.5000 mm
terminal coating	MATTE TIN
Terminal location	QUAD
Packaging Materials	UNSPECIFIED
Temperature level	OTHER
Consumer IC Type	CONSUMER CIRCUIT

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Data Sheet

FEATURES

25 MSPS correlated double sampler (CDS)

6 dB to 40 dB 10-bit variable gain amplifier (VGA)

Low noise optical black clamp circuit

Preblanking function

10-bit (AD9943), 12-bit (AD9944) 25 MSPS A/D converter

No missing codes guaranteed

3-wire serial digital interface

3 V single-supply operation

Space-saving 32-lead 5 mm × 5 mm LFCSP package

Complete 10-Bit and 12-Bit, 25 MHz

CCD Signal Processors

AD9943/AD9944

GENERAL DESCRIPTION

The

AD9943/AD9944

are complete analog signal processors

for CCD applications. They feature a 25 MHz single-channel

architecture designed to sample and condition the outputs of

interlaced and progressive scan area CCD arrays. The signal

chain for the

AD9943/AD9944

consists of a correlated double

sampler (CDS), a digitally controlled variable gain amplifier

(VGA), and a black level clamp. The

AD9943

offers 10-bit

ADC resolution, while the

AD9944

contains a true 12-bit ADC.

The internal registers are programmed through a 3-wire

serial digital interface. Programmable features include gain

adjustment, black level adjustment, input clock polarity, and

power-down modes. The

AD9943/AD9944

operate from a

single 3 V power supply, typically dissipate 79 mW, and are

packaged in space-saving 32-lead LFCSP packages.

APPLICATIONS

Digital still cameras

Digital video camcorders

PC cameras

Portable CCD imaging devices

CCTV cameras

FUNCTIONAL BLOCK DIAGRAM

REFT

REFB

PBLK

AD9943/AD9944

BAND GAP

REFERENCE

DRVDD

DRVSS

10/12

6dB–40dB

CCDIN

CDS

VGA

10-/12-BIT

ADC

DOUT

CLP

AVDD

AVSS

CONTROL

REGISTERS

DVDD

DVSS

02905-B-001

CLPOB

DIGITAL

INTERFACE

INTERNAL

TIMING

SCK

SDATA

SHP

SHD

DATACLK

Figure 1. Functional Block Diagram

Rev. C

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. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

Document Feedback

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

Technical Support

www.analog.com

AD9943/AD9944

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

General Specifications ................................................................. 3

Digital Specifications ................................................................... 3

AD9943 System Specifications ................................................... 3

AD9944 System Specifications ................................................... 4

Timing Specifications .................................................................. 5

Absolute Maximum Ratings............................................................ 6

Thermal Resistance ...................................................................... 6

ESD Caution .................................................................................. 6

Pin Configuration and Function Descriptions ............................. 7

Terminology ...................................................................................... 9

Data Sheet

Equivalent Input Circuits .............................................................. 10

Typical Performance Characteristics ........................................... 11

Internal Register Map .................................................................... 12

Serial Interface ................................................................................ 13

Circuit Description and Operation .............................................. 14

DC Restore .................................................................................. 14

Correlated Double Sampler ...................................................... 14

Optical Black Clamp .................................................................. 14

A/D Converter ............................................................................ 15

Variable Gain Amplifier ............................................................ 15

CCD Mode Timing ........................................................................ 16

Applications Information .............................................................. 17

Internal Power-On Reset Circuitry.......................................... 18

Grounding and Decoupling Recommendations .................... 18

Outline Dimensions ....................................................................... 19

Ordering Guide............................................................................... 19

REVISION HISTORY

3/14—Rev. B to Rev. C

Added Exposed Pad Notation, Figure 2 and Table 6 ................... 7

Added Exposed Pad Notation, Figure 3 and Table 7 ................... 8

Changes to Figure 17 ...................................................................... 17

Changes to Figure 18 ...................................................................... 18

Updated Outline Dimensions ....................................................... 19

Changes to Ordering Guide .......................................................... 19

5/04—Data Sheet Changed from Rev. A to Rev. B

Updated Format .................................................................. Universal

Updated Outline Dimensions ....................................................... 20

Changes to Ordering Guide .......................................................... 20

5/03—Data Sheet changed from Rev. 0 to Rev. A

Added AD9944 ................................................................... Universal

Changes to Features Section............................................................ 1

Updated Ordering Guide ................................................................. 5

Replaced TPC 3................................................................................. 9

Added Figure 12.............................................................................. 15

Updated Outline Dimensions ....................................................... 16

Rev. C | Page 2 of 20

AD9944 Related Products

	AD9944	AD9943	AD9943KCP	AD9943KCPRL	AD9944KCP	AD9944KCPRL
Description	SPECIALTY CONSUMER CIRCUIT, QCC32	SPECIALTY CONSUMER CIRCUIT, QCC32	SPECIALTY CONSUMER CIRCUIT, QCC32	SPECIALTY CONSUMER CIRCUIT, QCC32	SPECIALTY CONSUMER CIRCUIT, QCC32	SPECIALTY CONSUMER CIRCUIT, QCC32
Number of functions	1	1	1	1	1	1
Number of terminals	32	32	32	32	32	32
Maximum operating temperature	85 Cel	85 Cel	85 Cel	85 Cel	85 Cel	85 Cel
Minimum operating temperature	-20 Cel	-20 Cel	-20 Cel	-20 Cel	-20 Cel	-20 Cel
Maximum supply/operating voltage	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V
Minimum supply/operating voltage	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
Processing package description	5 X 5 MM, LEAD FREE, MO-220-VHHD-2, LFCSP-32	5 X 5 MM, LEAD FREE, MO-220-VHHD-2, LFCSP-32	5 X 5 MM, LEAD FREE, MO-220-VHHD-2, LFCSP-32	5 X 5 MM, LEAD FREE, MO-220-VHHD-2, LFCSP-32	5 X 5 MM, LEAD FREE, MO-220-VHHD-2, LFCSP-32	5 X 5 MM, LEAD FREE, MO-220-VHHD-2, LFCSP-32
Lead-free	Yes	Yes	Yes	Yes	Yes	Yes
EU RoHS regulations	Yes	Yes	Yes	Yes	Yes	Yes
China RoHS regulations	Yes	Yes	Yes	Yes	Yes	Yes
state	ACTIVE	ACTIVE	ACTIVE	ACTIVE	ACTIVE	ACTIVE
packaging shape	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE
Package Size	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
surface mount	Yes	Yes	Yes	Yes	Yes	Yes
Terminal form	NO LEAD	NO LEAD	NO LEAD	NO LEAD	NO LEAD	NO LEAD
Terminal spacing	0.5000 mm	0.5000 mm	0.5000 mm	0.5000 mm	0.5000 mm	0.5000 mm
terminal coating	MATTE TIN	MATTE TIN	MATTE TIN	MATTE TIN	MATTE TIN	MATTE TIN
Terminal location	QUAD	QUAD	QUAD	QUAD	QUAD	QUAD
Packaging Materials	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Temperature level	OTHER	OTHER	OTHER	OTHER	OTHER	OTHER
Consumer IC Type	CONSUMER CIRCUIT	CONSUMER CIRCUIT	CONSUMER CIRCUIT	CONSUMER CIRCUIT	CONSUMER CIRCUIT	CONSUMER CIRCUIT

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