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ADN4692E Datasheet(PDF) 16 Page - Analog Devices

Part No. ADN4692E
Description  3.3 V, 200 Mbps, Half- and Full-Duplex
Download  20 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADN4692E Datasheet(HTML) 16 Page - Analog Devices

 
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ADN4691E/ADN4693E/ADN4696E/ADN4697E
Data Sheet
Rev. A | Page 16 of 20
APPLICATIONS INFORMATION
M-LVDS extends the low power, high speed, differential
signaling of LVDS (low voltage differential signaling) 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 a twisted pair cable. The
transmitted differential signal allows other receiving nodes that
are 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 Ω).
For half-duplex multipoint applications such as the one 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
AB
R
D
RT
RT
ADN4696E
DE
DI
RO RE
AB
ADN4696E
DE
DI
RO RE
AB
ADN4696E
DE
DI
RO RE
AB
ADN4696E
DE
DI
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
AB Z Y
MASTER
SLAVE
SLAVE
SLAVE
RT
RT
ADN4697E
DE
DI
RO RE DE
DI
RO RE DE
DI
AB Z Y
ADN4697E
AB Z Y
ADN4697E
AB Z Y
ADN4697E
RT
RT
RO RE DE
DI
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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