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參數(shù)資料
| 型號(hào)： | HCPL-0720 |
| 英文描述： | 40 ns Propagation Delay,CMOS Optocoupler(40 ns 傳播延遲，CMOS光耦合器) |
| 中文描述： | 40納秒的傳播延遲，光耦的CMOS（40納秒的傳播延遲，的CMOS光耦合器） |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 305K |
| 代理商： | HCPL-0720 |
11
Optical Isolation for
Field Bus Networks
To recognize the full benefits of
these networks, each recom-
mends providing galvanic
isolation using Agilent
optocouplers. Since network
communication is bi-directional
Figure 15. Typical Field Bus Communication Physical Model.
(involving receiving data from
and transmitting data onto the
network), two Agilent
optocouplers are needed. By
providing galvanic isolation, data
integrity is retained via noise
reduction and the elimination of
false signals. In addition, the
network receives maximum
protection from power system
faults and ground loops.
Within an
isolated node
, such as
the DeviceNet Node shown in
Figure 16,
some
of the node’s
components are referenced to a
ground other than V- of the
network. These components could
include such things as devices with
serial ports, parallel ports, RS232
and RS485 type ports. As shown in
Figure 16, power from the network
is used only for the transceiver and
input (network) side of the
optocouplers.
Isolation of nodes connected to any
of the three types of digital field
bus networks is best achieved by
using the HCPL-772X/072X
optocouplers. For each network,
the HCPL-772X/072X satisify the
critical propagation delay and pulse
width distortion requirements over
the temperature range of 0
°
C to
+85
°
C, and power supply voltage
range of 4.5 V to 5.5 V.
Digital Field Bus
Communication
Networks
To date, despite its many draw-
backs, the 4 - 20 mA analog
current loop has been the most
widely accepted standard for
implementing process control
systems. In today’s manufacturing
environment, however, automated
systems are expected to help
manage the process, not merely
monitor it. With the advent of
digital field bus communication
networks such as CC-Link,
DeviceNet, PROFIBUS, and Smart
Distributed Systems (SDS), gone
are the days of constrained
information. Controllers can now
receive multiple readings from
field devices (sensors, actuators,
etc.) in addition to diagnostic
information.
The physical model for each of
these digital field bus communica-
tion networks is very similar as
shown in Figure 15. Each
includes one or more buses, an
interface unit, optical isolation,
transceiver, and sensing and/or
actuating devices.
CONTROLLER
TRANSCEIVER
OPTICAL
ISOLATION
BUS
INTERFACE
TRANSCEIVER
OPTICAL
ISOLATION
BUS
INTERFACE
TRANSCEIVER
OPTICAL
ISOLATION
BUS
INTERFACE
TRANSCEIVER
OPTICAL
ISOLATION
BUS
INTERFACE
TRANSCEIVER
OPTICAL
ISOLATION
BUS
INTERFACE
FIELD BUS
XXXXXX
YYY
SENSOR
DEVICE
CONFIGURATION
MOTOR
STARTER
MOTOR
CONTROLLER
NODE/APP SPECIFIC
uP/CAN
HCPL
772x/072x
HCPL
772x/072x
TRANSCEIVER
LOCAL
NODE
SUPPLY
5 V REG.
NETWORK
POWER
SUPPLY
V+ (SIGNAL)
V– (SIGNAL)
V+ (POWER)
V– (POWER)
GALVANIC
ISOLATION
BOUNDARY
AC LINE
DRAIN/SHIELD
SIGNAL
POWER
Figure 16. Typical DeviceNet Node.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCPL-0721 | 40 ns Propagation Delay,CMOS Optocoupler(40 ns 傳播延遲，CMOS光耦合器) |
| HCPL-0731 | Dual Channel Low Input Current, High Gain Optocouplers(雙通道，低輸入電流，高增益光耦器) |
| HCPL-2730 | Dual Channel Low Input Current, High Gain Optocouplers(雙通道，低輸入電流，高增益光耦器) |
| HCPL-2731 | Dual Channel Low Input Current, High Gain Optocouplers(雙通道，低輸入電流，高增益光耦器) |
| HCPL-073A | Very Low Power Consumption High Gain Optocouplers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCPL-0720#060 | 功能描述:高速光耦合器 25MBd 1Ch 150mA RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
| HCPL-0720#500 | 功能描述:高速光耦合器 25MBd 1Ch 150mA RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
| HCPL0720#560 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FET-OUTPUT OPTOCOUPLER |
| HCPL-0720#560 | 功能描述:高速光耦合器 25MBd 1Ch 150mA RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
| HCPL-0720-000E | 功能描述:高速光耦合器 25MBd 1Ch 150mA RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
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