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PDF AD9823 Data sheet ( Hoja de datos )
| Número de pieza | AD9823 | |
| Descripción | Correlated Double Sampler (CDS) | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
40 MHz correlated double sampler (CDS)
Fixed 3.5 dB CDS gain
Low noise optical black clamp circuit
3 V single-supply operation
14-lead TSSOP package
APPLICATIONS
Digital still cameras
Digital video camcorders
CCTV cameras
PC cameras
Portable CCD imaging devices
Correlated Double Sampler (CDS)
AD9823
FUNCTIONAL BLOCK DIAGRAM
AD9823
3.5dB FIXED GAIN
CCDIN
CDS
OUTPUT
BUFFER
OUTPUT
BYP2
CLP
CLP
OUTPUT
BUFFER
INTERNAL
TIMING
INTERNAL
REFERENCE
SHP SHD
BYP1 BYP3
Figure 1. Functional Block Diagram
REFOUT
VDD
GND
PRODUCT DESCRIPTION
The AD9823 is a correlated double sampler for digital camera
applications. It features a 40 MHz CDS amplifier with 3.5 dB of
fixed gain, an internal voltage reference supply, and timing
control for the SHP and SHD sampling clocks. Output buffers
are also included, providing drive strength for PCB traces and
direct connection to an image signal processor such as the
AD9821.
The AD9823 is ideal for applications that need to place the CDS
and VGA/ADC circuits on separate PC boards. The “pseudo
differential” outputs of the AD9823 provide good signal
integrity when interfaced with the differential input AD9821.
The AD9823 operates from a single 3 V power supply, typically
dissipates 50 mW, and is packaged in a 14-lead TSSOP package.
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.
Specifications subject to change without notice. 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 owners.
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. All rights reserved.
1 page  
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter
With Respect To
VDD GND
SHP, SHD
GND
BYP1, BYP2, BYP3
GND
CCDIN
GND
DATAOUT, REFOUT
GND
CLP GND
Junction Temperature
Lead Temperature (10 sec)
THERMAL CHARACTERISTICS
Thermal Resistance
14-Pin, TSSOP Package
θJA = 89.2°C/W
Min
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
Max
3.9
VDD + 0.3
VDD + 0.3
VDD + 0.3
VDD + 0.3
VDD + 0.3
150
350
AD9823
Unit
V
V
V
V
V
V
°C
°C
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. 0 | Page 5 of 8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AD9823.PDF ] | |
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