RTERM IN 00–15 8 IN 16–31 IN 32–47 IN 48–63 IN 64–79 IN 80–95 I" />
參數(shù)資料
型號： AD8115ASTZ
廠商： Analog Devices Inc
文件頁數(shù)： 15/33頁
文件大?。?/td> 0K
描述： IC VIDEO CROSSPOINT SWIT 100LQFP
標(biāo)準(zhǔn)包裝： 1
功能： 視頻交叉點開關(guān)
電路： 1 x 16:16
電壓電源： 雙電源
電壓 - 電源，單路/雙路(±)： ±4.5 V ~ 5.5 V
電流 - 電源： 80mA
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-LQFP（14x14）
包裝： 托盤
產(chǎn)品目錄頁面： 801 (CN2011-ZH PDF)
AD8114/AD8115
Rev. B | Page 21 of 32
16
RTERM
IN 00–15
8
IN 16–31
IN 32–47
IN 48–63
IN 64–79
IN 80–95
IN 96–111
IN 112–127
8
RANK 2
32:16 NONBLOCKING
(32:32 BLOCKING)
RANK 1
(8
× AD8114)
128:32
16
RTERM
8
16
RTERM
8
16
RTERM
8
16
RTERM
8
16
RTERM
8
16
RTERM
8
16
RTERM
8
AD8115
8
1k
8
1k
8
1k
8
1k
AD8115
OUT 0015
NONBLOCKING
ADDITIONAL
16 OUTPUTS
(SUBJECT
TO BLOCKING)
AD8114
01070-049
Figure 49. Nonblocking 128 × 16 Array (128 × 32 Blocking)
Using additional crosspoint devices in the design can lower the
number of outputs that must be wire-OR’ed together. Figure 49
shows a block diagram of a system using eight AD8114s and
two AD8115s to create a nonblocking, gain-of-2, 128 × 16
crosspoint that restricts the wire-OR’ing at the output to only
four outputs.
Additionally, by using the lower eight outputs from each of the
two Rank 2 AD8115s, a blocking 128 × 32 crosspoint array can
be realized. There are, however, some drawbacks to this
technique. The offset voltages of the various cascaded devices
will accumulate, and the bandwidth limitations of the devices
will compound. In addition, the extra devices will consume
more current and take up more board space. Once again, the
overall system design specifications will determine how to make
the various tradeoffs.
MULTICHANNEL VIDEO
The excellent video specifications of the AD8114/AD8115 make
them ideal candidates for creating composite video crosspoint
switches. These can be made quite dense by taking advantage of
the AD8114/AD8115’s high level of integration and the fact that
composite video requires only one crosspoint channel per
system video channel. There are, however, other video formats
that can be routed with the AD8114/AD8115 requiring more
than one crosspoint channel per video channel.
Some systems use twisted-pair wiring to carry video signals.
These systems utilize differential signals and can lower costs
because they use lower cost cables, connectors and termination
methods. They also have the ability to lower crosstalk and reject
common-mode signals, which can be important for equipment
that operates in noisy environments or where common-mode
voltages are present between transmitting and receiving
equipment.
In such systems, the video signals are differential; there is a
positive and negative (or inverted) version of the signals. These
complementary signals are transmitted onto each of the two
wires of the twisted pair, yielding a first-order zero common-
mode voltage. At the receive end, the signals are differentially
received and converted back into a single-ended signal.
When switching these differential signals, two channels are
required in the switching element to handle the two differential
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD8115ASTZ 制造商:Analog Devices 功能描述:IC SWITCH VIDEO
AD8115ASTZ2 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost 225 MHz 16 ?? 16 Crosspoint Switches
AD8115-EB 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost 225 MHz 16 X 16 Crosspoint Switches
AD8115-EVAL 制造商:Analog Devices 功能描述:EVAL BD LOW COST 225 MHZ 16 16 CROSSPOINT SWITES - Bulk
AD8116 制造商:AD 制造商全稱:Analog Devices 功能描述:200 MHz, 16 x 16 Buffered Video Crosspoint Switch
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