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AD8178ABPZ

更新时间： 2024-11-23 21:03:55
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亚德诺 - ADI /
页数 文件大小 规格书
38页 847K
描述
450 MHz, Triple 16 x 5 Video Crosspoint Switch

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450 MHz, Triple 16 × 5  
Video Crosspoint Switch  
AD8178  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
D0 D1 D2 D3 D4 VPOS VNEG VDD DGND  
Large, triple 16 × 5 high speed, nonblocking switch array  
Pin compatible with the AD8175 and AD8176 (16 × 9 switch  
arrays) and the AD8177 (16 × 5 switch array)  
Differential or single-ended operation  
Supports sync-on common-mode and sync-on color  
operating modes  
AD8178  
A0  
A1  
A2  
SERIN  
CLR  
SER/PAR  
45-BIT SHIFT  
RGB and HV outputs available for driving monitor directly  
G = +4 operation (differential input to differential output)  
Flexible power supplies: +5 V or 2.5 V  
Logic ground for convenient control interface  
Serial or parallel programming of switch array  
High impedance output disable allows connection of  
multiple devices with minimal loading on output bus  
Adjustable output CM and black level through external pins  
Excellent ac performance  
REGISTER WITH  
5-BIT PARALLEL  
LOADING  
1
0
WE  
SEROUT  
CLK  
20  
25  
NO  
CS  
CONNECT  
UPDATE  
RST  
PARALLEL LATCH  
CMENC  
25  
5
DECODE  
5 × 5:16 DECODERS  
Bandwidth: 450 MHz  
Slew rate: 1650 V/μs  
Settling time: 4 ns to 1% to support 1600 × 1200 at 85 Hz  
Low power of 2.3 W  
Low all hostile crosstalk  
80  
INPUT  
RECEIVER  
G = +2  
OUTPUT  
BUFFER  
G = +1  
2
2
2
2
2
2
R
G
B
R
G
B
H
V
−82 dB at 5 MHz  
−47 dB at 500 MHz  
Wide input common-mode range of 4 V  
Reset pin allows disabling of all outputs  
Fully populated 26 × 26 ball PBGA package (27 mm × 27 mm,  
1 mm ball pitch)  
SWITCH  
MATRIX  
G = +2  
2
2
2
2
R
G
B
R
G
B
H
V
Convenient grouping of RGB signals for easy routing  
2
2
APPLICATIONS  
RGB video switching  
KVM  
Professional video  
VBLK  
VOCM_CMENCON  
VOCM_CMENCOFF  
Figure 1.  
GENERAL DESCRIPTION  
The AD8178 is a high speed, triple 16 × 5 video crosspoint switch  
matrix. It supports 1600 × 1200 RGB displays at 85 Hz refresh rate,  
by offering a 450 MHz bandwidth and a slew rate of 1650 V/μs.  
With −82 dB of crosstalk and −84 dB isolation (at 5 MHz), the  
AD8178 is useful in many high speed video applications.  
The outputs can be used single-ended in conjunction with  
decoded H and V outputs to drive a monitor directly.  
The independent output buffers of the AD8178 can be placed  
into a high impedance state to create larger arrays by paralleling  
crosspoint outputs. Inputs can be paralleled as well. The AD8178  
offers both serial and a parallel programming modes.  
The AD8178 supports two modes of operation: differential-in to  
differential-out mode with sync-on CM signaling passed  
through the switch and differential-in to differential-out mode  
with CM signaling removed through the switch. The output CM  
and black level can be conveniently set via external pins.  
The AD8178 is packaged in a fully populated 26 × 26 ball PBGA  
package and is available over the extended industrial  
temperature range of −40°C to +85°C.  
Rev. A  
Document Feedback  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2007–2016 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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