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參數(shù)資料
| 型號： | ISL59482IRZ-T13 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Dual, 500MHz Triple, Multiplexing Amplifiers |
| 中文描述： | TRIPLE 2-CHANNEL, VIDEO MULTIPLEXER, PQCC48 |
| 封裝： | 7 X 7 MM, ROHS COMPLIANT, PLASTIC, QFN-48 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大?。?/td> | 683K |
| 代理商： | ISL59482IRZ-T13 |
12
FN6209.2
December 22, 2006
PC Board Layout
The AC performance of this circuit depends greatly on the
care taken in designing the PC board. The following are
recommendations to achieve optimum high frequency
performance from your PC board.
The use of low inductance components such as chip
resistors and chip capacitors is strongly recommended.
Minimize signal trace lengths. Trace inductance and
capacitance can easily limit circuit performance. Avoid
sharp corners, use rounded corners when possible. Vias
in the signal lines add inductance at high frequency and
should be avoided. PCB traces greater than 1" begin to
exhibit transmission line characteristics with signal rise/fall
times of 1ns or less. High frequency performance may be
degraded for traces greater than one inch, unless strip line
are used.
Match channel-channel analog I/O trace lengths and
layout symmetry. This will minimize propagation delay
mismatches.
Maximize use of AC de-coupled PCB layers. All signal I/O
lines should be routed over continuous ground planes (i.e.
no split planes or PCB gaps under these lines). Avoid vias
in the signal I/O lines.
Use proper value and location of termination resistors.
Termination resistors should be as close to the device as
possible.
When testing use good quality connectors and cables,
matching cable types and keeping cable lengths to a
minimum.
Minimum of 2 power supply decoupling capacitors are
recommended (1000pF, 0.01μF) as close to the devices
as possible. Avoid vias between the cap and the device
because vias add unwanted inductance. Larger caps can
be farther away. When vias are required in a layout, they
should be routed as far away from the device as possible.
The NIC pins are placed on both sides of the input pins.
These pins are not internally connected to the die. It is
recommended these pins be tied to ground to minimize
crosstalk.
The QFN Package Requires Additional PCB Layout
Rules for the Thermal Pad
The thermal pad is electrically connected to V- supply
through the high resistance IC substrate. Its primary function
is to provide heat sinking for the IC. However, because of the
connection to the V1- and V2- supply pins through the
substrate, the thermal pad must be tied to the V- supply to
prevent unwanted current flow to the thermal pad. Do
not
tie
this pin to GND as this could result in large back biased
currents flowing between GND and the V- pins. Maximum
AC performance is achieved if the thermal pad is attached to
a dedicated decoupled layer in a multi-layered PC board. In
cases where a dedicated layer is not possible, AC
performance may be reduced at upper frequencies.
The thermal pad requirements are proportional to power
dissipation and ambient temperature. A dedicated layer
eliminates the need for individual thermal pad area. When a
dedicated layer is not possible, an isolated thermal pad on
another layer should be used. Pad area requirements should
be evaluated on a case by case basis.
MUX Application Circuits
Each of the two 4:1 triple MUX amplifiers have their own
binary-coded, TTL compatible channel select logic inputs
(S0-1, 2, and S1-1, 2). All three amplifiers are switched
simultaneously from their respective inputs with S0-1 S1-1
controlling MUX-amp1, and S0-2, S1-2 controlling
MUX-amp2.
The HIZ control inputs (HIZ1, HIZ2) and device enable control
inputs (EN1 and EN2) control MUX-amp1 and MUX-amp2 in a
similar fashion. The individual control for each 4:1 triple MUX
enables external connections to configure the device for
different MUX applications.
8:1 RGB Video MUX
For a triple input RGB 8:1 MUX (Figure 4), the RGB amplifier
outputs of MUX-amp1 are parallel-connected to the RGB
amplifier outputs of MUX-amp2 to produce the single RGB
video output. Input channels CH0 to CH3 are assigned to
MUX-amp1, and channels CH4 through CH7 are assigned to
MUX-amp2. Channels CH0 through CH3 are selected by
setting HIZ1 low, HIZ2 high (enables MUX-amp1 and three-
states MUX-amp2) and the appropriate channel select logic
to S0-1, S1-1. Reversing the logic inputs of HIZ1, HIZ2
switches from MUX-amp1 to MUX-amp2 enabling the
selection of channels CH4 through CH7. The channel select
inputs are parallel connected (S0-1 to S0-2) and (S1-1 to
S1-2) to form two logic controls S0, S1. A single S2 control is
split into complimentary logic inputs for HIZ1 and HIZ2 to
produce a chip select function for the MSB. The logic control
truth table is shown in Figure 29.
4:1 RGB Differential Video MUX
Connecting the channel select pins in parallel (S0-1 to S0-2
and S1-1 to S1-2) converts the 8 individual RGB video inputs
into 4 differential RGB input pairs. The amplifier RGB outputs
are similarly paired resulting in a fully differential 4:1 RGB
MUX amp shown in Figure 5. Connecting HIZ1 and HIZ2 to
+5V disables the 4:1 differential MUX, and enables the
connection of additional differential-connected MUX amplifiers
to the same outputs, thus allowing input expansion to 8:1 or
more.
ISL59482
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| ISL59530_07 | 16x16 Video Crosspoint |
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| ISL59530IKZ | 16x16 Video Crosspoint |
| ISL59531 | 16x16 Video Crosspoint with Differential Inputs |
| ISL59531IKZ | 16x16 Video Crosspoint with Differential Inputs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ISL59483 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual, 500MHz Triple, Multiplexing Amplifiers |
| ISL59483_07 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual, 500MHz Triple, Multiplexing Amplifiers |
| ISL59483EVAL1Z | 功能描述:EVAL BOARD 1 FOR ISL59483 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:* 標準包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| ISL59483IRZ | 功能描述:IC MUX AMP DUAL 500MHZ 48-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| ISL59483IRZ-T13 | 功能描述:IC MUX AMP DUAL 500MHZ 48-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
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