AD9848AKSTZ PDF预览

AD9848AKSTZ

更新时间: 2025-07-19 19:45:59
品牌 Logo 应用领域
亚德诺 - ADI 商用集成电路
页数 文件大小 规格书
32页 627K
描述
IC SPECIALTY CONSUMER CIRCUIT, PQFP48, 1.40 MM HEIGHT, PLASTIC, MS-026BBC, LQFP-48, Consumer IC:Other

AD9848AKSTZ 数据手册

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CCD Signal Processors with  
Integrated Timing Driver  
a
AD9848/AD9849  
PRODUCT DESCRIPTION  
FEATURES  
The AD9848 and AD9849 are highly integrated CCD signal pro-  
cessors for digital still camera applications. Both include a complete  
analog front end with A/D conversion, combined with a program-  
mable timing driver. The Precision Timing core allows adjustment  
of high speed clocks with approximately 1 ns resolution.  
AD9848: 10-Bit, 20 MHz Version  
AD9849: 12-Bit, 30 MHz Version  
Correlated Double Sampler (CDS)  
–2 dB to +10 dB Pixel Gain Amplifier (PxGA )  
2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)  
10-Bit 20 MHz A/D Converter (AD9848)  
12-Bit 30 MHz A/D Converter (AD9849)  
Black Level Clamp with Variable Level Control  
Complete On-Chip Timing Driver  
®
The AD9848 is specified at pixel rates of 20 MHz, and the  
AD9849 is specified at 30 MHz. The analog front end includes  
black level clamping, CDS, PxGA, VGA, and a 10-bit or 12-bit A/D  
converter. The timing driver provides the high speed CCD clock  
drivers for RG and H1–H4. Operation is programmed using a  
3-wire serial interface.  
Precision Timing  
Core with 1 ns Resolution @ 20 MSPS  
On-Chip 3 V Horizontal and RG Drivers (AD9848)  
On-Chip 5 V Horizontal and RG Drivers (AD9849)  
48-Lead LQFP Package  
Packaged in a space saving 48-lead LQFP, the AD9848 and  
AD9849 are specified over an operating temperature range of  
–20°C to +85°C.  
APPLICATIONS  
Digital Still Cameras  
FUNCTIONAL BLOCK DIAGRAM  
VRT VRB  
VREF  
4؎6dB  
2dB TO 36dB  
VGA  
10 OR 12  
DOUT  
CDS  
ADC  
PxGA  
CCDIN  
CLAMP  
CLAMP  
INTERNAL  
CLOCKS  
CLPOB  
CLPDM  
PBLK  
CLI  
RG  
PRECISION  
TIMING  
CORE  
HORIZONTAL  
DRIVERS  
4
H1–H4  
SYNC  
GENERATOR  
INTERNAL  
REGISTERS  
AD9848/AD9849  
HD  
VD  
SL  
SCK SDATA  
PxGA is a registered trademark and Precision Timing is a trademark of Analog Devices, Inc.  
REV. A  
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  
© 2003 Analog Devices, Inc.  

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