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LM1881N 参数 Datasheet PDF下载

LM1881N图片预览
型号: LM1881N
PDF下载: 下载PDF文件 查看货源
内容描述: LM1881视频同步分离 [LM1881 Video Sync Separator]
分类和应用:
文件页数/大小: 12 页 / 302 K
品牌: NSC [ NATIONAL SEMICONDUCTOR ]
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LM1881, LM1881-X Video Sync Separator
June 2003
LM1881, LM1881-X
Video Sync Separator
General Description
The LM1881 Video sync separator extracts timing informa-
tion including composite and vertical sync, burst/back porch
timing, and odd/even field information from standard nega-
tive going sync NTSC, PAL* and SECAM video signals with
amplitude from 0.5V to 2V p-p. The integrated circuit is also
capable of providing sync separation for non-standard,
faster horizontal rate video signals. The vertical output is
produced on the rising edge of the first serration in the
vertical sync period. A default vertical output is produced
after a time delay if the rising edge mentioned above does
not occur within the externally set delay period, such as
might be the case for a non-standard video signal.
Features
AC coupled composite input signal
>
10 kΩ input resistance
<
10 mA power supply drain current
Composite sync and vertical outputs
Odd/even field output
Burst gate/back porch output
Horizontal scan rates to 150 kHz
Edge triggered vertical output
Default triggered vertical output for non-standard video
signal (video games-home computers)
n
-40˚C to +85˚C operation (LM1881-X)
n
n
n
n
n
n
n
n
n
Connection Diagram
LM1881N
00915001
Order Number LM1881M or LM1881N (0˚C to +70˚C)
Order Number LM1881M-X or LM1881N-X (-40˚C to +85˚C)
See NS Package Number M08A or N08E
*PAL in this datasheet refers to European broadcast TV standard “Phase Alternating Line”, and not to Programmable Array Logic.
© 2003 National Semiconductor Corporation
DS009150
www.national.com