Datasheet 搜索 > 接口隔离器 > ADI（亚德诺） > ADN4651BRWZ-RL7 数据手册 > ADN4651BRWZ-RL7 产品设计参考手册 3/12 页
器件3D模型￥ 57.715
ADN4651BRWZ-RL7 产品设计参考手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
接口隔离器
封装:
SOIC-20
描述:
5 kV rms、600 Mbps双通道LVDS隔离器
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
典型应用电路图在P1
原理图在P10
应用领域在P4P6P10
电气规格在P11
导航目录
ADN4651BRWZ-RL7数据手册
Page:
of 12 Go
若手册格式错乱，请下载阅览PDF原文件
Application Note AN-1177
Rev. 0 | Page 3 of 12
BUS TYPES AND TOPOLOGIES
Standard TIA/EIA-644 LVDS devices allow low power, high
speed communication. The advantages of LVDS can also
be applied to multipoint applications by using TIA/EIA-899
devices. Bus topology is one of the main factors relating to
which LVDS or M-LVDS devices are used in an application.
POINT-TO-POINT
Point-to-point bus topologies consist of a single driver and single
receiver connected together using one pair of wires or traces.
Figure 2 demonstrates a typical configuration, where the receiving
end of the link has a termination resistor. This is the most common
application for LVDS devices. Multiple pairs of wires or traces
can be used to create additional channels of communication and
increase total bandwidth between two points.
11236-002
D
OUT–
D
OUT+
R
IN–
R
IN+
D
IN
R
OUT
R
T
LVDS
DRIVER
LVDS
RECEIVER
Figure 2. LVDS Point-to-Point Link
Analog Devices, Inc., has a portfolio of LVDS drivers and receivers
for one, two or four LVDS channels as shown in Table 1. Unused
outputs should be left open circuit.
Table 1. LVDS Drivers and Receivers
Part No.
Tx
Rx
Part No.
Tx
Rx
ADN4661 1 0 ADN4665 4 0
ADN4662 0 1 ADN4666 0 4
ADN4663 2 0 ADN4667 4 0
ADN4664 0 2 ADN4668 0 4
M-LVDS can also be used in a point-to-point topology, where the
same transceiver device is used for the driver circuit (with receiver
disabled) and the receiving circuit (with driver disabled).
MULTI-DROP
A single driver can be connected to multiple receivers using
a multi-drop bus topology as shown in Figure 3. LVDS is
designed for point-to-point applications and so in a multi-drop
configuration, the number of receivers that can be connected
and the signaling distance can be limited. M-LVDS can be used
in a multi-drop topology to drive up to 32 nodes across longer
distances compared to LVDS.
D
OUT–
D
OUT+
R
IN–
R
IN+
D
IN
R
OUT
R
OUT
R
T
LVDS
DRIVER
LVDS
RECEIVERS
11236-003
Figure 3. LVDS Multi-Drop Bus
MULTIPOINT
In networks where multiple devices can either send or receive,
a multipoint bus topology may be used. M-LVDS is designed
for such multi-point applications, allowing up to 32 nodes to
be connected to a single bus. There are two types of multipoint
buses, half-duplex and full duplex, shown in Figure 4 and
Figure 5, respectively. In a half-duplex bus, two wires are used
such that one device may transmit, and the other devices can
receive. In a full-duplex bus, four wires are used, allowing one
node to concurrently transmit back to another transmitting
node (that is, slave devices responding as broadcast commands
are sent by the master to all nodes).
11236-004
B
A
B
A
DI
RO DI
RO
RODI
R
T
R
T
MLVDS
TRANSCEIVERS
Figure 4. M-LVDS Half-Duplex Bus
11236-005
Z
Y
Z
Y
B
A
B
A
DI
RO DI
RO
R
T
R
T
R
T
R
T
MLVDS
TRANSCEIVERS
RODI
RODI
Figure 5. M-LVDS Full-Duplex Bus
Another factor to be considered in multipoint buses is the bus
idle condition. When no device is transmitting, the differential
voltage on a terminated bus will be close to 0 V. This means that
for a standard receiver with symmetrical input thresholds, the
receiver output will be undefined. This corresponds to the
Type 1 M-LVDS receivers with an input threshold of ±50 mV.
In order to provide a guaranteed receiver output state (output
low) in the bus idle condition, Type 2 M-LVDS receivers have
an offset receiver input threshold of +50 mV to +150 mV.
Table 2. M-LVDS Transceivers
Part No. Rx Type Duplex Data Rate
ADN4690E 1 Half 100
ADN4691E 1 Half 200
ADN4692E 1 Full 100
ADN4693E
1
Full
200
ADN4694E 2 Half 100
ADN4695E 2 Full 100
ADN4696E 2 Half 200
ADN4697E 2 Full 200
器件 Datasheet 文档搜索
AiEMA 数据库涵盖高达 72,405,303 个元件的数据手册，每天更新 5,000 多个 PDF 文件
