参数资料
型号: AD9943KCPZ
厂商: Analog Devices Inc
文件页数: 1/20页
文件大小: 0K
描述: IC CCD SIGNAL PROCESSOR 32-LFCSP
标准包装: 1
类型: CCD 信号处理器,10 位
输入类型: 逻辑
输出类型: 逻辑
接口: 3 线串口
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP-VQ(5x5)
包装: 托盘
Complete 10-Bit and 12-Bit, 25 MHz
CCD Signal Processors
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
APPLICATIONS
Digital still cameras
Digital video camcorders
PC cameras
Portable CCD imaging devices
CCTV cameras
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.
FUNCTIONAL BLOCK DIAGRAM
Figure 1. Functional Block Diagram
DATACLK
SHD
SHP
BAND GAP
REFERENCE
DOUT
CCDIN
PBLK
REFT
REFB
INTERNAL
TIMING
6dB–40dB
AVDD
DVDD
DVSS
AVSS
DRVDD
DRVSS
10
DIGITAL
INTERFACE
SDATA
SCK
SL
CLPOB
10/12
CDS
VGA
CLP
AD9943/AD9944
CONTROL
REGISTERS
10-/12-BIT
ADC
02905-B-001
Rev. C
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rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
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