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AD9847

Description
10-Bit 40 MSPS CCD Signal Processor with Integrated Timing Driver
File Size346KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet View All

AD9847 Overview

10-Bit 40 MSPS CCD Signal Processor with Integrated Timing Driver

a
10-Bit 40 MSPS CCD Signal Processor
with Integrated Timing Driver
AD9847
GENERAL DESCRIPTION
FEATURES
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 40 MHz A/D Converter
Black Level Clamp with Variable Level Control
Complete On-Chip Timing Driver
Precision Timing™
Core with 500 ps
Resolution at 40 MSPS
On-Chip 5 V Horizontal and RG Drivers
48-Lead LQFP Package
APPLICATIONS
Digital Still Cameras
The AD9847 is a highly integrated CCD signal processor for
digital still camera applications. The AD9847 includes a com-
plete analog front end with A/D conversion, combined with
a programmable timing driver. The
Precision Timing
core allows
adjustment of high speed clocks with approximately 500 ps
resolution at clock speeds of 40 MHz.
The AD9847 is specified at pixel rates of 40 MHz. The analog
front end includes black level clamping, CDS,
PxGA,
VGA, and a
10-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.
Packaged in a space-saving 48-lead LQFP, the AD9847 is speci-
fied over an operating temperature range of –20°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
VRT
VRB
4
CCDIN
CDS
6dB
PxGA
2dB TO 36dB
VGA
VREF
10
ADC
DOUT
CLAMP
INTERNAL
CLOCKS
CLAMP
CLPOB
CLPDM
RG
H1–H4
4
HORIZONTAL
DRIVERS
PRECISION
TIMING
CORE
PBLK
CLI
AD9847
SYNC
GENERATOR
INTERNAL
REGISTERS
HD
VD
SL
SCK
SDATA
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, nor for any infringements of patents or other rights of third parties that
may result from its use. 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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© 2003 Analog Devices, Inc.
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