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PDF ADM2587E Data sheet ( Hoja de datos )
| Número de pieza | ADM2587E | |
| Descripción | Signal and Power Isolated RS-485 Transceiver | |
| Fabricantes | Analog Devices | |
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Data Sheet
Signal and Power Isolated RS-485
Transceiver with ±15 kV ESD Protection
ADM2582E/ADM2587E
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 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
UL recognition: 2500 V rms for 1 minute per UL 1577
VDE Certificates of Conformity
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
VIORM = 560 V peak
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
FUNCTIONAL BLOCK DIAGRAM
VCC
VISOOUT
isoPower DC-TO-DC CONVERTER
OSCILLATOR
RECTIFIER
REGULATOR
VISOIN
DIGITAL ISOLATION iCoupler
TxD ENCODE
DECODE
TRANSCEIVER
D
Y
Z
DE ENCODE
DECODE
RxD DECODE
ENCODE
A
R
B
RE ADM2582E/ADM2587E
GND1
ISOLATION
BARRIER
Figure 1.
GND2
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.
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 the
AN-0971 Application Note, Control of Radiated Emissions with
isoPower Devices, for details on board layout considerations.
Rev. F
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2009–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
ADM2582E/ADM2587E
ADM2582E/ADM2587E REGULATORY INFORMATION
Table 5. ADM2582E/ADM2587E Approvals
Organization Approval Type
UL Recognized under the Component
Recognition Program of Underwriters
Laboratories, Inc.
VDE Certified according to DIN EN 60747-5-2
(VDE 0884 Part 2): 2003-01
Notes
In accordance with UL 1577, each ADM2582E/ADM2587E is proof tested
by applying an insulation test voltage ≥ 3000 V rms for 1 second.
In accordance with DIN EN 60747-5-2, each ADM2582E/ADM2587E is
proof tested by applying an insulation test voltage ≥ 1050 VPEAK for
1 second.
ADM2582E/ADM2587E INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 6.
Parameter
Rated Dielectric Insulation Voltage
Minimum External Air Gap (Clearance)
Minimum External Tracking (Creepage)
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index)
Isolation Group
Symbol
L(I01)
L(I02)
CTI
Value
2500
7.7
7.6
0.017 min
>175
IIIa
Unit
V rms
mm
mm
mm
V
Conditions
1-minute duration
Measured from input terminals to output terminals,
shortest distance through air
Measured from input terminals to output terminals,
shortest distance along body
Insulation distance through insulation
DIN IEC 112/VDE 0303-1
Material Group (DIN VDE 0110: 1989-01, Table 1)
ADM2582E/ADM2587E VDE 0884 INSULATION CHARACTERISTICS
This isolator is suitable for basic electrical isolation only within the safety limit data. Maintenance of the safety data must be ensured by
means of protective circuits.
An asterisk (*) on packages denotes VDE 0884 Part 2 approval.
Table 7.
Description
CLASSIFICATIONS
Installation Classification per DIN VDE 0110 for
Rated Mains Voltage
≤150 V rms
≤300 V rms
≤400 V rms
Climatic Classification
Pollution Degree
VOLTAGE
Maximum Working Insulation Voltage
Input-to-Output Test Voltage
Method b1
Method a
After Environmental Tests, Subgroup 1
After Input and/or Safety Test,
Subgroup 2/Subgroup 3
Highest Allowable Overvoltage
SAFETY-LIMITING VALUES
Case Temperature
Input Current
Output Current
Insulation Resistance at TS
Conditions
DIN VDE 0110, see Table 1
VIORM × 1.875 = VPR, 100% production tested,
tm = 1 sec, partial discharge < 5 pC
VIORM × 1.6 = VPR, tm = 60 sec, partial discharge < 5 pC
VIORM × 1.2 = VPR, tm = 60 sec, partial discharge < 5 pC
Transient overvoltage, tTR = 10 sec
Maximum value allowed in the event of a failure
VIO = 500 V
Symbol Characteristic Unit
VIORM
VPR
I to IV
I to III
I to II
40/85/21
2
560
1050
VTR
TS
IS, INPUT
IS, OUTPUT
RS
896
672
4000
150
265
335
>109
V peak
V peak
V peak
V peak
V peak
°C
mA
mA
Ω
Rev. F | Page 5 of 20
5 Page 
Data Sheet
60
RL = 54Ω
50
40
RL = 120Ω
30
20 NO LOAD
10
0
–40 –15 10 35 60
TEMPERATURE (°C)
85
Figure 21. ADM2582E Isolated Supply Current vs. Temperature
(VCC = 3.3 V, Data Rate = 16 Mbps)
ADM2582E/ADM2587E
40
RL = 54Ω
35
30
25 RL = 120Ω
20
15
10
NO LOAD
5
0
–40 –15 10 35 60
TEMPERATURE (°C)
85
Figure 22. ADM2587E Isolated Supply Current vs. Temperature
(VCC = 3.3 V, Data Rate = 500 kbps)
Rev. F | Page 11 of 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ADM2587E.PDF ] | |
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