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AD725AR-REEL PDF预览

AD725AR-REEL

更新时间: 2024-09-15 22:17:47
品牌 Logo 应用领域
亚德诺 - ADI 编码器
页数 文件大小 规格书
20页 350K
描述
Low Cost RGB to NTSC/PAL Encoder with Luma Trap Port

AD725AR-REEL 数据手册

 浏览型号AD725AR-REEL的Datasheet PDF文件第2页浏览型号AD725AR-REEL的Datasheet PDF文件第3页浏览型号AD725AR-REEL的Datasheet PDF文件第4页浏览型号AD725AR-REEL的Datasheet PDF文件第5页浏览型号AD725AR-REEL的Datasheet PDF文件第6页浏览型号AD725AR-REEL的Datasheet PDF文件第7页 
Low Cost RGB to NTSC/PAL Encoder  
with Luma Trap Port  
a
AD725  
FEATURES  
P RO D UCT D ESCRIP TIO N  
Com posite Video Output: Both NTSC and PAL  
Chrom inance and Lum inance (S-Video) Outputs  
Lum a Trap Port to Elim inate Cross Color Artifacts  
TTL Logic Levels  
Integrated Delay Line and Auto-Tuned Filters  
Drives 75 Reverse-Term inated Loads  
Low Pow er +5 V Operation  
T he AD725 is a very low cost general purpose RGB to NT SC/  
PAL encoder that converts red, green and blue color compo-  
nent signals into their corresponding luminance (baseband  
amplitude) and chrominance (subcarrier amplitude and phase)  
signals in accordance with either NT SC or PAL standards.  
T hese two outputs are also combined on-chip to provide a  
composite video output. All three outputs are available sepa-  
rately at voltages of twice the standard signal levels as re-  
quired for driving 75 , reverse-terminated cables.  
Pow er-Dow n to <1 A  
Very Low Cost  
T he AD725 features a luminance trap (YT RAP) pin that pro-  
vides a means of reducing cross color generated by subcarrier  
frequency components found in the luminance signal. For por-  
table or other power-sensitive applications, the device can be  
powered down to less than 1 µA of current consumption. All  
logic levels are T T L compatible thus supporting the logic re-  
quirements of 3 V CMOS systems.  
APPLICATIONS  
RGB/ VGA to NTSC/ PAL Encoding  
Personal Com puters/ Netw ork Com puters  
Video Gam es  
Video Conference Cam eras  
Digital Still Cam eras  
T he AD725 is packaged in a low cost 16-lead SOIC and oper-  
ates from a +5 V supply.  
FUNCTIO NAL BLO CK D IAGRAM  
NTSC/PAL  
CSYNC  
BURST  
HSYNC  
VSYNC  
SYNC  
SEPARATOR  
XNOR  
4FSC  
CSYNC  
NTSC/PAL  
4FSC CLOCK  
FSC 90؇C/270؇C  
FSC 90  
؇
C
؎
180؇C  
QUADRATURE  
(PAL ONLY)  
4FSC  
+4  
FSC 0؇C  
DECODER  
CLOCK  
AT 8FSC  
CSYNC  
2-POLE  
LP POST-  
FILTER  
3-POLE  
LP PRE-  
FILTER  
SAMPLED-  
DATA  
DELAY LINE  
Y
DC  
CLAMP  
LUMINANCE  
OUTPUT  
RED  
X2  
LUMINANCE  
TRAP  
COMPOSITE  
OUTPUT  
NTSC/PAL  
U
V
X2  
X2  
RGB-TO-YUV  
ENCODING  
MATRIX  
U
4-POLE  
LPF  
DC  
CLAMP  
CLAMP  
GREEN  
BLUE  
BALANCED  
MODULATORS  
4-POLE  
LPF  
CHROMINANCE  
OUTPUT  
V
DC  
CLAMP  
4-POLE  
LPF  
CLAMP  
BURST  
REV. 0  
Inform ation furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assum ed by Analog Devices for its  
use, nor for any infringem ents of patents or other rights of third parties  
which m ay result from its use. No license is granted by im plication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.  
Tel: 781/ 329-4700  
Fax: 781/ 326-8703  
World Wide Web Site: http:/ / w w w .analog.com  
© Analog Devices, Inc., 1997  

AD725AR-REEL 替代型号

型号 品牌 替代类型 描述 数据表
AD725AR ADI

完全替代

Low Cost RGB to NTSC/PAL Encoder with Luma Trap Port
AD725ARZ ADI

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Low Cost RGB to NTSC/PAL Encoder with Luma Trap Port

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