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參數(shù)資料
| 型號： | LMH6581VS/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 多路復(fù)用及模擬開關(guān) |
| 英文描述： | 8-CHANNEL, CROSS POINT SWITCH, PQFP48 |
| 封裝： | LEAD FREE, TQFP-48 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 693K |
| 代理商： | LMH6581VS/NOPB |
September 2007
LMH6580/LMH6581
8x4 500 MHz Analog Crosspoint Switch, Gain of 1,
Gain of 2
General Description
The LMH family of products is joined by the LMH6580 and
the LMH6581, high speed, non-blocking, analog, crosspoint
switches. The LMH6580/LMH6581 are designed for high
speed, DC coupled, analog signals such as high resolution
video (UXGA and higher). The LMH6580/LMH6581 each has
eight inputs and four outputs. The non-blocking architecture
allows any output to be connected to any input, including an
input that is already selected. With fully buffered inputs the
LMH6580/LMH6581 can be impedance matched to nearly
any source impedance. The buffered outputs of the
LMH6580/LMH6581 can drive up to two back terminated
video loads (75
load). The outputs and inputs also feature
high impedance inactive states allowing high performance in-
put and output expansion for array sizes such as 8 x 8 or 16
x 4 by combining two devices. The LMH6580/LMH6581 are
controlled with a 4 pin serial interface that can be configured
as a 3 wire interface. Both serial mode and addressed modes
are available.
The LMH6580/LMH6581 come in 48-pin TQFP packages.
They also have diagonally symmetrical pin assignments to
facilitate double sided board layouts and easy pin connec-
tions for expansion.
Features
■ 8 inputs and 4 outputs
■ 48-pin TQFP package
■ 3 dB bandwidth (V
OUT = 2 VPP, RL = 1 k)
500 MHz
■ 3 dB bandwidth (V
OUT = 2 VPP, RL = 150)
450 MHz
■ Fast slew rate
2100 V/
μs
■ Channel to channel crosstalk (10/100 MHz) 70/ 52 dBc
■ All hostile crosstalk (10/100 MHz)
55/45 dBc
■ Easy to use serial programming
4 wire bus
■ Two programming modes
Serial & addressed modes
■ Symmetrical pinout facilitates expansion.
■ Output current
±70 mA
■ Two gain options
A
V = 1 or AV = 2
Applications
■ Studio monitoring/production video systems
■ Conference room multimedia video systems
■ KVM (keyboard video mouse) systems
■ Security/surveillance systems
■ Multi-antenna diversity radio
■ Video test equipment
■ Medical imaging
■ Wide-band routers & switches
Connection Diagram
30007202
Block Diagram
30007211
LMH is a registered trademark of National Semiconductor Corporation.
TRI-STATE is a registered trademark of National Semiconductor Corporation.
2007 National Semiconductor Corporation
300072
www.national.com
LMH6580/LMH6581
8x4
500
MHz
Analog
Crosspoint
Switch,
Gain
of
1,
Gain
of
2
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