AD9948 Analog Devices, AD9948 Datasheet
AD9948
Manufacturer Part Number
AD9948
Description
10-Bit CCD Signal Processor with Precision Timing Core
Manufacturer
Analog Devices
Datasheet
1.AD9948.pdf
(28 pages)
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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 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.
FEATURES
Correlated Double Sampler (CDS)
0 dB to 18 dB Pixel Gain Amplifier ( PxGA
6 dB to 42 dB 10-Bit Variable Gain Amplifier (VGA)
10-Bit 25 MSPS A/D Converter
Black Level Clamp with Variable Level Control
Complete On-Chip Timing Driver
Precision Timing Core with 800 ps Resolution
On-Chip 3 V Horizontal and RG Drivers
40-Lead LFCSP Package
APPLICATIONS
Digital Still Cameras
High Speed Digital Imaging Applications
CCDIN
H1–H4
RG
4
AD9948
CDS
HORIZONTAL
DRIVERS
0dB TO 18dB
®
FUNCTIONAL BLOCK DIAGRAM
PxGA
)
GENERATOR
PRECISION
6dB TO 42dB
HD
INTERNAL
CLOCKS
TIMING
CORE
SYNC
VGA
10-Bit CCD Signal Processor with
VD
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
GENERAL DESCRIPTION
The AD9948 is a highly integrated CCD signal processor for
digital still camera applications. Specified at pixel rates of up to
25 MHz, the AD9948 consists of a complete analog front end
with A/D conversion, combined with a programmable timing
driver. The Precision Timing core allows adjustment of high
speed clocks with 800 ps resolution.
The analog front end includes black level clamping, CDS, PxGA,
VGA, and a 25 MHz 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 40-lead LFCSP package, the
AD9948 is specified over an operating temperature range of
–20°C to +85°C.
REFT REFB
V
REF
CLAMP
SL
10-BIT
REGISTERS
Precision Timing
ADC
INTERNAL
SCK
© 2003 Analog Devices, Inc. All rights reserved.
SDATA
10
HBLK
CLP/PBLK
CLI
DOUT
AD9948
www.analog.com
™
Core
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