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AD9821 PDF预览

AD9821

更新时间: 2024-02-11 17:11:53
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
16页 269K
描述
Complete 12-Bit 40 MSPS Imaging Signal Processor

AD9821 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:QFP
包装说明:1.40 MM, PLASTIC, MS-026BBC, LQFP-48针数:48
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.31.00.01风险等级:5.8
最大模拟输入电压:1.8 V最小模拟输入电压:
转换器类型:ADC, PROPRIETARY METHODJESD-30 代码:S-PQFP-G48
JESD-609代码:e3长度:7 mm
湿度敏感等级:3模拟输入通道数量:1
位数:12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输出位码:BINARY
输出格式:PARALLEL, WORD封装主体材料:PLASTIC/EPOXY
封装代码:LFQFP封装等效代码:QFP48,.35SQ,20
封装形状:SQUARE封装形式:FLATPACK, LOW PROFILE, FINE PITCH
峰值回流温度(摄氏度):260电源:3 V
认证状态:Not Qualified采样速率:40 MHz
采样并保持/跟踪并保持:SAMPLE座面最大高度:1.6 mm
子类别:Other Converters标称供电电压:3 V
表面贴装:YES技术:CMOS
温度等级:OTHER端子面层:Matte Tin (Sn)
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

AD9821 数据手册

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Complete 12-Bit 40 MSPS  
Imaging Signal Processor  
AD9821  
FEATURES  
GENERAL DESCRIPTION  
Differential Sensor Input with 1 V p-p Input Range  
0 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)  
Low Noise Optical Black Clamp Circuit  
Analog Preblanking Function  
12-Bit 40 MSPS A/D Converter (ADC)  
3-Wire Serial Digital Interface  
3 V Single-Supply Operation  
Low Power: 150 mW @ 3 V Supply  
48-Lead LQFP Package  
The AD9821 is a complete analog signal processor for imaging  
applications that do not require Correlated Double Sampling  
(CDS). It features a 40 MHz single-channel architecture designed  
to sample and condition the outputs of CMOS imagers and CCD  
arrays already containing on-chip CDS. The AD9821’s signal  
chain consists of a differential input sample-and-hold amplifier  
(SHA), digitally controlled variable gain amplifier (VGA), black  
level clamp, and a 12-bit ADC.  
The internal registers are programmed through a 3-wire serial  
digital interface. Programmable features include gain adjust-  
ment, black level adjustment, and power-down modes.  
APPLICATIONS  
Digital Still Cameras Using CMOS Imagers  
Industrial/Scientific Imaging  
The AD9821 operates from a single 3 V power supply, typically  
dissipates 150 mW, and is packaged in a 48-lead LQFP.  
FUNCTIONAL BLOCK DIAGRAM  
AVDD  
AVSS  
VRT VRB  
PBLK  
DRVDD  
DRVSS  
BAND GAP  
REFERENCE  
AD9821  
0dB ~ 36dB  
VGA  
12  
VIN+  
VIN–  
+
12-BIT  
ADC  
DOUT  
SHA  
BYP1  
CLP  
10  
CLPOB  
8
BLK CLAMP  
LEVEL  
INTERNAL  
REGISTERS  
DVDD  
DVSS  
DIGITAL  
INTERFACE  
DATACLK  
SL  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
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  
www.analog.com  
© Analog Devices, Inc., 2002  

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