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| 型号： | MAX4358ECE+TD |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 33/43页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO CROSSPOINT SWIT 144TQFP |
| 产品变化通告： | Product Discontinuation 28/Nov/2011 |
| 标准包装： | 250 |
| 功能： | 视频交叉点开关 |
| 电路： | 1 x 32:16 |
| 电压电源： | 单/双电源 |
| 电压 - 电源，单路/双路(±)： | 5V，± 3 V ~ 5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 144-TQFP |
| 供应商设备封装： | 144-TQFP（20x20） |
| 包装： | 带卷 (TR) |
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MAX4358
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
______________________________________________________________________________________
39
2.Maintain controlled-impedance traces. Design as
many of the PC board traces as possible to be 75
transmission lines. This lowers the impedance of the
traces reducing a potential source of crosstalk. More
power will be dissipated due to the output buffer dri-
ving a lower impedance.
3.Minimize ground current interaction by using a good
ground plane strategy.
In addition to crosstalk, another key issue of concern is
isolation. Isolation is the rejection of undesirable feed-
through from input-to-output with the output disabled.
The MAX4358 achieves a -110dB isolation at 6MHz by
selecting the pinout configuration such that the inputs
and outputs are on opposite sides of the package.
Coupling through the power supply is a function of the
quality and location of the supply bypassing. Use
appropriate low-impedance components and locate
them as close as possible to the IC. Avoid routing the
inputs near the outputs.
Power-Supply Bypassing
The MAX4358 operates from a single +5V or dual ±3V
to ±5V supplies. For single-supply operation, connect
all VEE pins to ground and bypass all power-supply
pins with a 0.1F capacitor to ground. For dual-supply
systems, bypass all supply pins to ground with 0.1F
capacitors.
Power in Large Systems
T
he MAX4358 has been designed to operate with split
supplies down to ±3V or a single supply of +5V.
Operating at the minimum supply voltages reduces the
power dissipation by as much 40% to 50%. At ±5V, the
MAX4358 consumes 195mW (0.38mW/point).
Driving a PC-Board Interconnect or Cable
(AV = +1V/V or +2V/V)
The MAX4358 output buffers can be programmed to
either AV = +1V/V or +2V/V. The +1V/V configuration is
typically used when driving short lengths (less than
3cm), high impedance, "local" PC board traces. To
drive a cable or a 75 transmission line trace, program
the gain of the output buffer to +2V/V and place a 75
resistor in series with the output. The series termination
resistor and the 75 load impedance act as a voltage
divider that divides the video signal in half. Set the gain
to +2V/V to transmit a standard 1V video signal down a
cable. The series 75 resistor is called the back-
match, reverse termination, or series termination. This
75 resistor reduces reflections and provides isolation,
increasing the output capacitive driving capability.
Matrix Programming
The MAX4358’s unique digital interface simplifies pro-
gramming multiple MAX4358 devices in an array.
Multiple devices are connected with DOUT of the first
HOST
CONTROLLER
DIN
SCLK
CE
MODE
UPDATE
DOUT
CHIP ADDRESS = 0
CHIP ADDRESS = 1
VIRTUAL SERIAL BUS (MODE 0: INDIVIDUAL OUTPUT ADDRESS MODE)
CHIP ADDRESS = 2
A3
A2
A1
A0
MAX4358
DIN
SCLK
CE
MODE
UPDATE
DOUT
A3
VDD
A2
A1
A0
MAX4358
DIN
SCLK
CE
MODE
UPDATE
DOUT
NEXT DEVICE
A3
A2
A1
A0
MAX4358
VDD
Figure 10. Matrix Mode Programming
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4359EAX | 功能描述:模拟和数字交叉点 IC RoHS:否 制造商:Micrel 配置:2 x 2 封装 / 箱体:MLF-16 数据速率:10.7 Gbps 输入电平:CML, LVDS, LVPECL 输出电平:CML 电源电压-最大:3.6 V 电源电压-最小:2.375 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 产品:Digital Crosspoint 封装:Tube |
| MAX4359EAX+ | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4359EAX+T | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4359EAX-T | 功能描述:模拟和数字交叉点 IC RoHS:否 制造商:Micrel 配置:2 x 2 封装 / 箱体:MLF-16 数据速率:10.7 Gbps 输入电平:CML, LVDS, LVPECL 输出电平:CML 电源电压-最大:3.6 V 电源电压-最小:2.375 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 产品:Digital Crosspoint 封装:Tube |
| MAX4359EWG | 功能描述:模拟和数字交叉点 IC RoHS:否 制造商:Micrel 配置:2 x 2 封装 / 箱体:MLF-16 数据速率:10.7 Gbps 输入电平:CML, LVDS, LVPECL 输出电平:CML 电源电压-最大:3.6 V 电源电压-最小:2.375 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 产品:Digital Crosspoint 封装:Tube |
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