参数资料
型号: ADN4696EBRZ-RL7
厂商: Analog Devices Inc
文件页数: 8/20页
文件大小: 0K
描述: IC TXRX LVDS 2CH 8SOIC
标准包装: 1,000
系列: *
ADN4696E/ADN4697E
Data Sheet
Rev. 0 | Page 16 of 20
APPLICATIONS INFORMATION
M-LVDS extends the low power, high speed differential
signalling of LVDS (low voltage differential signalling) to
multipoint systems where multiple nodes are connected over
short distances in a bus topology network.
With M-LVDS, a transmitting node drives a differential signal
across a transmission medium such as twisted pair cable. The
transmitted differential signal allows other receiving nodes
connected along the bus to detect a differential voltage that can
then be converted back into a single-ended logic signal by the
receiver.
The communication line is typically terminated at both ends
by resistors, RT, the value of which is chosen to match the
characteristic impedance of the medium (typically 100 ).
For half-duplex multipoint applications such as that shown in
Figure 37, only one driver can be enabled at any time. Full-
duplex nodes allow a master-slave topology as shown in Figure 38.
In this configuration, a master node can concurrently send and
receive data to/from slave nodes. At any time, only one slave
node can have its driver enabled to concurrently transmit data
back to the master node.
RO
NOTES
1. MAXIMUM NUMBER OF NODES: 32.
2. RT IS EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE USED.
RE
A
B
R
D
RT
ADN4696E
DE
DI
RO RE
A
B
ADN4696E
DE
DI
RO RE
A
B
ADN4696E
DE
DI
RO RE
A
B
ADN4696E
DE
DI
10355-
037
R
D
R
D
R
D
R
D
R
D
R
D
R
D
Figure 37. ADN4696E Typical Half-Duplex M-LVDS Network (Type 2 Receivers with Threshold Offset for Bus-Idle Fail-Safe)
RO
NOTES
1. MAXIMUM NUMBER OF NODES: 32.
2. RT IS EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE USED.
RE
A B Z
Y
MASTER
SLAVE
RT
ADN4697E
DE
DI
RO RE
DE
DI
RO RE
DE
DI
A B Z
Y
ADN4697E
A B Z
Y
ADN4697E
A B Z
Y
ADN4697E
RT
RO RE
DE
DI
10355-
038
R
D
R
D
R
D
R
D
Figure 38. ADN4697E Typical Full-Duplex M-LVDS Master-Slave Network (Type 2 Receivers with Threshold Offset for Bus-Idle Fail-Safe)
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