ADM2582EBRWZ Analog Devices Inc, ADM2582EBRWZ Datasheet

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ADM2582EBRWZ

Manufacturer Part Number
ADM2582EBRWZ
Description
IC TXRX RS485 ISOLATED 20SOIC
Manufacturer
Analog Devices Inc
Series
isoPower®r
Datasheet

Specifications of ADM2582EBRWZ

Inputs - Side 1/side 2
1/1
Number Of Channels
3
Isolation Rating
2500Vrms
Voltage - Supply
3 V ~ 5.5 V
Data Rate
16Mbps
Propagation Delay
63ns
Output Type
Differential
Package / Case
20-SOIC (7.5mm Width)
Operating Temperature
-40°C ~ 85°C
Device Type
Transceiver
Ic Interface Type
RS485
No. Of Drivers
1
Supply Voltage Range
3V To 5.5V
Driver Case Style
SOIC
No. Of Pins
20
Operating Temperature Range
-40°C To +85°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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FEATURES
Isolated RS-485/RS-422 transceiver, configurable as half or
isoPower® integrated isolated dc-to-dc converter
±15 kV ESD protection on RS-485 input/output pins
Complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E)
ADM2582E data rate: 16 Mbps
ADM2587E data rate: 500 kbps
5 V or 3.3 V operation
Connect up to 256 nodes on one bus
Open- and short-circuit, fail-safe receiver inputs
High common-mode transient immunity: >25 kV/µs
Thermal shutdown protection
Safety and regulatory approvals
Safety and regulatory approvals
Operating temperature range: −40°C to +85°C
Highly integrated, 20-lead, wide-body SOIC package
APPLICATIONS
Isolated RS-485/RS-422 interfaces
Industrial field networks
Multipoint data transmission systems
GENERAL DESCRIPTION
The ADM2582E/ADM2587E are fully integrated signal and
power isolated data transceivers with ±15 kV ESD protection
and are suitable for high speed communication on multipoint
transmission lines. The ADM2582E/ADM2587E include an
integrated isolated dc-to-dc power supply, which eliminates the
need for an external dc-to-dc isolation block.
They are designed for balanced transmission lines and comply
with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E).
The devices integrate Analog Devices, Inc., iCoupler® technology to
combine a 3-channel isolator, a three-state differential line driver, a
differential input receiver, and Analog Devices isoPower dc-to-
dc converter into a single package. The devices are powered by a
single 5 V or 3.3 V supply, realizing a fully integrated signal and
power isolated RS-485 solution.
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
full duplex
UL recognition: 2500 V rms for 1 minute per UL 1577
VDE Certificates of Conformity
DIN EN 60747-5-2 (VDE 0884 Rev. 2): 2003-01
V
IORM
= 560 V peak
Transceiver with ±15 kV ESD Protection
Signal and Power Isolated RS-485
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
RxD
The ADM2582E/ADM2587E driver has an active high enable.
An active low receiver enable is also provided, which causes the
receiver output to enter a high impedance state when disabled.
The devices have current limiting and thermal shutdown
features to protect against output short circuits and situations
where bus contention may cause excessive power dissipation.
The parts are fully specified over the industrial temperature
range and are available in a highly integrated, 20-lead, wide-
body SOIC package.
The ADM2582E/ADM2587E contain isoPower technology that
uses high frequency switching elements to transfer power through
the transformer. Special care must be taken during printed circuit
board (PCB) layout to meet emissions standards. Refer to
Application Note AN-0971, Control of Radiated Emissions with
isoPower Devices, for details on board layout considerations.
TxD
RE
DE
DIGITAL ISOLATION iCoupler
V
CC
FUNCTIONAL BLOCK DIAGRAM
isoPower DC-TO-DC CONVERTER
GND
OSCILLATOR
ENCODE
ENCODE
DECODE
ADM2582E/ADM2587E
1
©2009–2011 Analog Devices, Inc. All rights reserved.
ISOLATION
BARRIER
Figure 1.
ADM2582E/ADM2587E
REGULATOR
RECTIFIER
DECODE
DECODE
ENCODE
GND
V
TRANSCEIVER
ISOOUT
www.analog.com
2
D
R
V
Y
Z
A
B
ISOIN

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ADM2582EBRWZ Summary of contents

Page 1

FEATURES Isolated RS-485/RS-422 transceiver, configurable as half or full duplex isoPower® integrated isolated dc-to-dc converter ±15 kV ESD protection on RS-485 input/output pins Complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E) ADM2582E data rate: 16 Mbps ADM2587E data rate: 500 kbps 5 ...

Page 2

ADM2582E/ADM2587E TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 ADM2582E Timing Specifications ............................................ 4 ADM2587E Timing Specifications ............................................ 4 ADM2582E/ADM2587E Package Characteristics ................... ...

Page 3

SPECIFICATIONS All voltages are relative to their respective ground; 3.0 ≤ V recommended operation range, unless otherwise noted. All typical specifications are at T Table 1. Parameter ADM2587E SUPPLY CURRENT Data Rate ≤ 500 kbps ADM2582E SUPPLY CURRENT Data Rate ...

Page 4

ADM2582E/ADM2587E ADM2582E TIMING SPECIFICATIONS T = −40°C to +85°C. A Table 2. Parameter Symbol DRIVER Maximum Data Rate Propagation Delay, Low to High t DPLH Propagation Delay, High to Low t DPHL Output Skew t SKEW Rise Time/Fall Time t ...

Page 5

ADM2582E/ADM2587E REGULATORY INFORMATION Table 5. ADM2582E/ADM2587E Approvals Organization Approval Type UL Recognized under the Component Recognition Program of Underwriters Laboratories, Inc. Table 6. ADM2582E/ADM2587E Approvals Organization Approval Type VDE To be certified according to DIN EN 60747-5-2 (VDE 0884 Rev. ...

Page 6

ADM2582E/ADM2587E ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. All voltages are relative to A their respective ground. Table 9. Parameter V CC Digital Input Voltage (DE, RE, TxD) Digital Output Voltage (RxD) Driver Output/Receiver Input Voltage Operating Temperature ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 11. Pin Function Description Pin No. Mnemonic Description 1 GND Ground, Logic Side Logic Side Power Supply recommended that a 0.1 µF and a 10 µF decoupling capacitor be ...

Page 8

ADM2582E/ADM2587E TYPICAL PERFORMANCE CHARACTERISTICS 180 160 R = 54Ω L 140 120 R = 120Ω L 100 80 NO LOAD –40 – TEMPERATURE (°C) Figure 3. ADM2582E Supply Current (I (Data Rate = 16 ...

Page 9

TxD CH1 2.0V CH2 2.0V M10.00ns CH3 2.0V Figure 9. ADM2582E Driver Propagation Delay TxD CH1 2.0V CH2 2.0V M200ns CH3 2.0V Figure 10. ADM2587E Driver Propagation Delay 0 –10 –20 –30 ...

Page 10

ADM2582E/ADM2587E RxD 3 CH1 2.0V CH2 2.0V M10.00ns CH3 2.0V Figure 15. ADM2582E Receiver Propagation Delay RxD 3 CH1 2.0V CH2 2.0V M10.00ns CH3 2.0V Figure 16. ADM2587E Receiver Propagation Delay ...

Page 11

R = 54Ω 120Ω LOAD –40 – TEMPERATURE (°C) Figure 21. ADM2582E Isolated Supply Current vs. Temperature (V = 3.3 V, Data Rate = 16 Mbps) ...

Page 12

ADM2582E/ADM2587E TEST CIRCUITS Y TxD V OD2 Z Figure 23. Driver Voltage Measurement Y TxD V 60Ω OD3 Z Figure 24. Driver Voltage Measurement Y TxD Figure 25. Driver Propagation Delay ...

Page 13

SWITCHING CHARACTERISTICS DPLH Z 1/ 90% POINT – V DIFF (Y) V DIFF 10% POINT – │t ...

Page 14

ADM2582E/ADM2587E CIRCUIT DESCRIPTION SIGNAL ISOLATION The ADM2582E/ADM2587E signal isolation is implemented on the logic side of the interface. The part achieves signal isolation by having a digital isolation section and a transceiver section (see Figure 1). Data applied to the ...

Page 15

DC CORRECTNESS AND MAGNETIC FIELD IMMUNITY The digital signals transmit across the isolation barrier using iCoupler technology. This technique uses chip-scale transformer windings to couple the digital signals magnetically from one side of the barrier to the other. Digital inputs ...

Page 16

ADM2582E/ADM2587E APPLICATIONS INFORMATION PCB LAYOUT The ADM2582E/ADM2587E isolated RS-422/RS-485 transceiver contains an isoPower integrated dc-to-dc converter, requiring no external interface circuitry for the logic interfaces. Power supply bypassing is required at the input and output supply pins (see Figure 35). ...

Page 17

In the case of unipolar voltage, the stress on the insulation is significantly lower. This allows operation at higher working voltages while still achieving a 50-year service life. The working voltages listed in Table 10 can be ...

Page 18

ADM2582E/ADM2587E 3.3V/5V POWER SUPPLY 100nF 10µF 100nF V CC MICROCONTROLLER AND UART GND 1 Figure example of a circuit diagram using the ADM2582E/ADM2587E. 10nF V CC isoPower DC-TO-DC CONVERTER OSCILLATOR RECTIFIER REGULATOR DIGITAL ISOLATION iCoupler TxD ENCODE ...

Page 19

TYPICAL APPLICATIONS Figure 41 and Figure 42 show typical applications of the ADM2582E/ADM2587E in half duplex and full duplex RS-485 network configurations 256 transceivers can be connected to the RS-485 bus. To minimize reflections, terminate the line at ...

Page 20

... OUTLINE DIMENSIONS 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 ORDERING GUIDE Model 1 Data Rate (Mbps) ADM2582EBRWZ 16 ADM2582EBRWZ-REEL7 16 ADM2587EBRWZ 0.5 ADM2587EBRWZ-REEL7 0.5 EVAL-ADM2582EEBZ EVAL-ADM2587EEBZ RoHS Compliant Part. ©2009–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. ...

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