ADM2687EBRIZ Analog Devices Inc, ADM2687EBRIZ Datasheet - Page 20

• Manufacturer Part Number: ADM2687EBRIZ
• Description: 58T8846
• Manufacturer: Analog Devices Inc

Specifications of ADM2687EBRIZ

• No. Of Channels: 1
• Propagation Delay: 100ns
• Supply Current: 72mA
• Supply Voltage Range: 3V To 5.5V
• Digital Ic Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes

ADM2682E/ADM2687E
TYPICAL APPLICATIONS
An example application of the
duplex RS-485 node is shown in the circuit diagram of Figure 45.
Refer to the PCB Layout section for the recommended placement
of the capacitors shown in this circuit diagram. Placement of
the R
and the network configuration. Refer to
RS-485/RS-422 Circuit Implementation Guide, for guidance on
termination.
T
termination resistors depends on the location of the node
MICROCONTROLLER
3.3V/5V POWER
AND UART
SUPPLY
V
GND
CC
100nF
1
ADM2682E/ADM2687E
10µF
100nF
AN-960 Application
Figure 45. Example Circuit Diagram Using the
10nF
RxD
TxD
DE
RE
DIGITAL ISOLATION i Coupler
GND
V
for a full-
CC
OSCILLATOR
iso Power DC-TO-DC CONVERTER
1
Note,
ENCODE
ENCODE
DECODE
Rev. 0 | Page 20 of 24
ISOLATION
BARRIER
Figure 46 and Figure 47 show typical applications of the
ADM2682E/ADM2687E
network configurations. Up to 256 transceivers can be connected to
the RS-485 bus. To minimize reflections, terminate the line at
the receiving end in its characteristic impedance and keep stub
lengths off the main line as short as possible. For half-duplex
operation, this means that both ends of the line must be terminated
because either end can be the receiving end.
DECODE
DECODE
REGULATOR
ADM2682E/ADM2687E
ENCODE
RECTIFIER
ADM2682E/ADM2687E
GND
2
TRANSCEIVER
V
ISOOUT
D
R
in half duplex and full duplex RS-485
V
Y
Z
A
B
100nF
100nF
ISOIN
R
10nF
10µF
T