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Analog Devices Semiconductor Electronic Components Datasheet

AD9978 Datasheet

14-Bit CCD Signal Processor

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Dual-Channel, 14-Bit CCD Signal
Processor with Precision Timing Core
AD9978
FEATURES
Dual AFE channels
1.8 V analog and digital core supply voltage
Serial data output with reduced range LVDS outputs
Differential analog inputs
CDS or SHA configuration (CDS bypass) with
−3 dB, 0 dB, +3 dB, and +6 dB gain
6 dB to 42 dB, 10-bit variable gain amplifier (VGA)
14-bit, 65 MHz analog-to-digital converter (ADC)
www.DBalatacSkhleveet4lUc.lcamomp with variable level control
Precision Timing core with 240 ps resolution @ 65 MHz
APPLICATIONS
Digital video cameras
Digital still cameras
Digital copiers
Multifunction printers
High speed industrial cameras
GENERAL DESCRIPTION
The AD9978 is a highly integrated, dual-channel, CCD signal
processor for high speed digital video camera applications. Each
channel is specified at pixel rates of up to 65 MHz and consists
of a complete analog front end with ADC conversion. The
Precision Timing™ core allows adjustment of the correlated
double sampler (CDS) and sample-and-hold amplifier (SHA)
clocks with 240 ps resolution at 65 MHz operation. The
AD9978 also contains a reduced range, low voltage differential
signaling (LVDS) interface for the dual-channel data outputs.
Each analog front end includes black level clamping, a CDS,
a VGA, and a 65 MHz, 14-bit ADC. Operation is programmed
using a 3-wire serial interface.
Packaged in a space-saving, 6 mm × 6 mm, 40-lead LFCSP, the
AD9978 is specified over an operating temperature range of
−25°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
AD9978
INP_A
INM_A
INP_B
INM_B
CDS/
SHA
6dB TO 42dB
VGA
–3dB, 0dB, +3dB, +6dB
–3dB, 0dB, +3dB, +6dB
6dB TO 42dB
CDS/
SHA
VGA
VREF
ADC
CLAMP
CLAMP
ADC
LVDS
SERIALIZER
INTERNAL CLOCKS
CLK_OUT
PRECISION
TIMING
CORE
SYNC
GENERATOR
INTERNAL
REGISTERS
HD VD
Figure 1.
SL SDATA SCK
DOUT0P
DOUT0N
DOUT1P
DOUT1N
TCLKP
TCLKN
DOUT2P
DOUT2N
DOUT3P
DOUT3N
CLI
For more information about the AD9978, contact Analog Devices via email at afe.ccd@analog.com.
Rev. SpA
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. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD9978 Datasheet

14-Bit CCD Signal Processor

No Preview Available !

AD9978
NOTES
www.DataSheet4U.com
©2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D06810F-0-9/07(SpA)
Rev. SpA | Page 2 of 2


Part Number AD9978
Description 14-Bit CCD Signal Processor
Maker Analog Devices
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AD9978 Datasheet PDF






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