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參數資料
| 型號： | LMH6570MAX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 多路復用及模擬開關 |
| 英文描述： | 2:1 High Speed Video Multiplexer |
| 中文描述： | 4-CHANNEL, VIDEO MULTIPLEXER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 11/14頁 |
| 文件大小： | 831K |
| 代理商： | LMH6570MAX |
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 LMH6570 could support a dual antenna receiver with
two physically separate antennas. Monitoring the signal
strength of the active antenna and switching to the other
antenna when a fade is detected is a simple way to achieve
spacial diversity. This method gives about a 3dB boost in
average signal strength and is the least expensive method
for combining signals.
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
, to stabilize the amplifier
output
under
capacitive
loading.
Capacitive
loads
of
20129918
FIGURE 4. 4:1 MUX USING TWO LMH6570’s
20129919
FIGURE 5. Delay Circuit Implementation
L
www.national.com
11
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PDF描述 |
|---|---|
| LMH6570 | 2:1 High Speed Video Multiplexer |
| LMH6574 | 4:1 High Speed Video Multiplexer |
| LMH6574MA | 4:1 High Speed Video Multiplexer |
| LMH6574MAX | 4:1 High Speed Video Multiplexer |
| LMH6622 | Dual Wideband, Low Noise, 160MHz, Operational Amplifiers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LMH6570MAX/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 |
| LMH6572 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Triple 2:1 High Speed Video Multiplexer |
| LMH6572_05 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Triple 2:1 High Speed Video Multiplexer |
| LMH6572MQ | 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 |
| LMH6572MQ/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 |
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