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參數資料
| 型號： | LMH6574MAX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 多路復用及模擬開關 |
| 英文描述： | 4:1 High Speed Video Multiplexer |
| 中文描述： | 4-CHANNEL, VIDEO MULTIPLEXER, PDSO14 |
| 封裝： | SOIC-14 |
| 文件頁數： | 12/15頁 |
| 文件大小： | 860K |
| 代理商： | LMH6574MAX |
Application Notes
(Continued)
If it is important in the end application to make sure that no
two inputs are presented to the output at the same time, an
optional delay block can be added, to drive the SHUTDOWN
pin of each device, as shown.
Figure 5
shows one possible
approach to this delay circuit. The delay circuit shown will
delay SHUTDOWN’s H to L transitions (R
1
and C
1
decay)
but won’t delay its L to H transition. R
should be kept small
compared to R
in order to not reduce the SHUTDOWN
voltage and to produce little or no delay to SHUTDOWN.
Other Applications
The LMH6574 could support a multi antenna receiver with
up to four separate antennas. Monitoring the signal strength
of all 4 antennas and connecting the strongest signal to the
final IF stage would provide effective spacial diversity.
For direction finding, the LMH6574 could be used to provide
high speed sampling of four separate antennas to a single
DSP which would use the information to calculate the direc-
tion of the received signal.
DRIVING CAPACITIVE LOADS
Capacitive output loading applications will benefit from the
use of a series output resistor R
OUT
.
Figure 6
shows the use
of a series output resistor, R
OUT
20119718
FIGURE 4. 8:1 MUX USING TWO LMH6574’s
20119719
FIGURE 5. Delay Circuit Implementation
L
www.national.com
12
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LMH6574MAX/NOPB | 功能描述:多路器開關 IC RoHS:否 制造商:Texas Instruments 通道數量:1 開關數量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| LMH6580 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8x4 500MHz Analog Crosspoint Switch, Gain of 1, Gain of 2 |
| LMH6580EVAL | 功能描述:其他開發工具 LMH6580 EVAL BOARD RoHS:否 制造商:Parallax 產品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評估:ELEV-8 Quadcopter 工作電源電壓: |
| LMH6580VS | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8x4 500MHz Analog Crosspoint Switch, Gain of 1, Gain of 2 |
| LMH6580VS/NOPB | 功能描述:模擬和數字交叉點 IC RoHS:否 制造商:Micrel 配置:2 x 2 封裝 / 箱體:MLF-16 數據速率:10.7 Gbps 輸入電平:CML, LVDS, LVPECL 輸出電平:CML 電源電壓-最大:3.6 V 電源電壓-最小:2.375 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 產品:Digital Crosspoint 封裝:Tube |
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