AD9844

更新时间： 2024-02-05 16:51:38

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	168K
描述
Complete 12-Bit 20 MSPS CCD Signal Processor

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AD9844 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFP
包装说明：	LFQFP,	针数：	48
Reach Compliance Code：	unknown	风险等级：	5.11
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	S-PQFP-G48
JESD-609代码：	e3	长度：	7 mm
湿度敏感等级：	3	功能数量：	1
端子数量：	48	最高工作温度：	85 °C
最低工作温度：	-20 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	LFQFP	封装形状：	SQUARE
封装形式：	FLATPACK, LOW PROFILE, FINE PITCH	峰值回流温度（摄氏度）：	260
认证状态：	COMMERCIAL	座面最大高度：	1.6 mm
最大供电电压 (Vsup)：	3.6 V	最小供电电压 (Vsup)：	2.7 V
表面贴装：	YES	温度等级：	OTHER
端子面层：	MATTE TIN	端子形式：	GULL WING
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	40	宽度：	7 mm
Base Number Matches：	1

AD9844 数据手册

Complete 12-Bit 20 MSPS

CCD Signal Processor

AD9844A

PRODUCT DESCRIPTION

FEATURES

The AD9844A 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 AD9844A’s signal chain

consists of an input clamp, correlated double sampler (CDS),

digitally controlled variable gain amplifier (VGA), black level

clamp, and 12-bit A/D converter. Additional input modes are

provided for processing analog video signals.

20 MSPS Correlated Double Sampler (CDS)

4 dB ؎ 6 dB Variable CDS Gain with 6-Bit Resolution

2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)

Low Noise Clamp Circuits

Analog Preblanking Function

12-Bit 20 MSPS A/D Converter

Auxiliary Inputs with VGA and Input Clamp

3-Wire Serial Digital Interface

3 V Single Supply Operation

Low Power: 65 mW @ 2.7 V Supply

48-Lead LQFP Package

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.

APPLICATIONS

Digital Still Cameras

Digital Video Camcorders

PC Cameras

The AD9844A operates from a single 3 V power supply, typi-

cally dissipates 78 mW, and is packaged in a 48-lead LQFP.

FUNCTIONAL BLOCK DIAGRAM

PBLK

CLPOB

AVDD

AVSS

DRVDD

CLP

4dB؎6dB

DRVSS

2dB~36dB

CDS

CCDIN

2:1

MUX

12-BIT

ADC

DOUT

VGA

CLP

VRT

VRB

BANDGAP

CLPDM

AUX1IN

REFERENCE

OFFSET

DAC

2:1

MUX

BUF

INTERNAL

BIAS

CML

AUX2IN

INTERNAL

REGISTERS

CLP

DVDD

DVSS

DIGITAL

INTERFACE

INTERNAL

TIMING

AD9844A

SHP

SHD DATACLK

SCK

SDATA

REV. 0

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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与AD9844相关器件

型号	品牌	描述	获取价格	数据表
AD9844A	ADI	Complete 12-Bit 20 MSPS CCD Signal Processor	获取价格
AD9844AJST	ADI	Complete 12-Bit 20 MSPS CCD Signal Processor	获取价格
AD9844AJST	ROCHESTER	SPECIALTY CONSUMER CIRCUIT, PQFP48, PLASTIC, LQFP-48	获取价格
AD9844AJSTRL	ADI	暂无描述	获取价格
AD9844AJSTRL	ROCHESTER	SPECIALTY CONSUMER CIRCUIT, PQFP48, PLASTIC, LQFP-48	获取价格
AD9844AJSTZ	ROCHESTER	SPECIALTY CONSUMER CIRCUIT, PQFP48, PLASTIC, LQFP-48	获取价格

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