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ADuM1100 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADuM1100
Beschreibung iCoupler Digital Isolator
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 16 Seiten
ADuM1100 Datasheet, Funktion
a
iCoupler® Digital Isolator
ADuM1100
FEATURES
High Data Rate: DC to 100 Mbps (NRZ)
Compatible with 3.3 V and 5.0 V Operation/
Level Translation
125؇C Max Operating Temperature
Low Power Operation
5 V Operation
1.0 mA Max @ 1 Mbps
4.5 mA Max @ 25 Mbps
16.8 mA Max @ 100 Mbps
3.3 V Operation
0.4 mA Max @ 1 Mbps
3.5 mA Max @ 25 Mbps
7.1 mA Max @ 50 Mbps
8-Lead SOIC Package (lead-free version available)
High Common-Mode Transient Immunity: >25 kV/s
Safety and Regulatory Information
UL Recognized
2500 V rms for 1 Minute per UL 1577
CSA Component Acceptance Notice No. 5A
VDE Certificate of Conformity
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003–01
DIN EN 60950 (VDE 0805): 2001–12; EN 60950: 2000
VIORM = 560 VPEAK
GENERAL DESCRIPTION
The ADuM1100 is a digital isolator based on Analog Devices’
iCoupler technology. Combining high speed CMOS and mono-
lithic air core transformer technology, this isolation component
provides outstanding performance characteristics superior to
alternatives such as optocoupler devices.
Configured as a pin compatible replacement for existing high speed
optocouplers, the ADuM1100 supports data rates as high as
25 Mbps and 100 Mbps.
The ADuM1100 operates with either voltage supply ranging from
3.0 V to 5.5 V, boasts a propagation delay of <18 ns and edge
asymmetry of <2 ns, and is compatible with temperatures up to
125°C. It operates at very low power, less than 0.9 mA of quiescent
current (sum of both sides), and a dynamic current of less than
160 µA per Mbps of data rate. Unlike other optocoupler alter-
natives, the ADuM1100 provides dc correctness with a patented
refresh feature that continuously updates the output signal.
The ADuM1100 is offered in three grades. The ADuM1100AR
and ADuM1100BR can operate up to a maximum temperature
of 105°C and support data rates up to 25 Mbps and 100 Mbps,
respectively. The ADuM1100UR can operate up to a maximum
temperature of 125°C and supports data rates up to 100 Mbps.
APPLICATIONS
Digital Fieldbus Isolation
Opto-Isolator Replacement
Computer-Peripheral Interface
Microprocessor System Interface
General Instrumentation and Data Acquisition
Applications
FUNCTIONAL BLOCK DIAGRAM
VDD1
VI
(DATA IN)
VDD1
GND1
ED
NE
CC
OO
DD
EE
UPDATE
WATCHDOG
ADuM1100
FOR PRINCIPLES OF OPERATION, SEE METHOD OF OPERATION,
DC CORRECTNESS, AND MAGNETIC FIELD IMMUNITY SECTION.
VDD2
GND2
VO
(DATA OUT)
GND2
REV. E
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. 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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.






ADuM1100 Datasheet, Funktion
ADuM1100
REGULATORY INFORMATION
The ADuM1100 has been approved by the following organizations:
UL CSA
VDE
Recognized under 1577
Approved under CSA Component
Certified according to
Component Recognition Program1 Acceptance Notice No. 5A, C22.2 No. 1-98, DIN EN 60747-5-2 (VDE 0884 Part 2): 2003–12
C22.2 No. 14-95, and C22.2 No. 950-95 DIN EN 60950 (VDE 0805): 2001–12; EN60950: 2000
File E214100
File 205078
File 2471900-4880-0002
NOTES
1In accordance with UL 1577, each ADuM1100 is proof tested by applying an insulation test voltage 3000 V rms for 1 second (leakage detection current limit, II–O 5 µA).
2In accordance with DIN EN 60747-5-2, each ADuM1100 is proof tested by applying an insulation test voltage 1050 VPEAK for 1 second (partial discharge detection
limit 5 pC). A “*” mark branded on the component designates DIN EN 60747-5-2 approval.
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Parameter
Symbol Value Unit Conditions
Minimum External Air Gap (Clearance)
L(I01)
Minimum External Tracking (Creepage)
L(I02)
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index) CTI
Isolation Group
4.90 min mm
4.01 min mm
0.016 min mm
>175
V
IIIa
Measured from input terminals to output terminals,
shortest distance through air
Measured from input terminals to output terminals,
shortest distance path along body
Insulation distance through insulation
DIN IEC 112/VDE 0303 Part 1
Material Group (DIN VDE 0110, 1/89, Table 1)
DIN EN 60747-5-2 (VDE 0884 Part 2) INSULATION CHARACTERISTICS
Description
Symbol Characteristic
Installation Classification per DIN VDE 0110
For Rated Mains Voltage 150 V rms
For Rated Mains Voltage 300 V rms
For Rated Mains Voltage 400 V rms
Climatic Classification
ADuM1100AR and ADuM1100BR
ADuM1100UR
Pollution Degree (DIN VDE 0110, Table I)
Maximum Working Insulation Voltage
Input-to-Output Test Voltage, Method b1
VIORM × 1.875 = VPR, 100% Production Test, tM = 1 sec, Partial Discharge < 5 pC
Input-to-Output Test Voltage, Method a
After Environmental Tests Subgroup 1
VIORM × 1.6 = VPR, tM = 10 sec, Partial Discharge < 5 pC
After Input and/or Output Safety Test Subgroup 2/3
VIORM × 1.2 = VPR, tM = 10 sec, Partial Discharge < 5 pC
Highest Allowable Overvoltage (Transient Overvoltage, tINI = 60 sec)
Safety-Limiting Values (Maximum Value Allowed in the Event of a Failure,
See Thermal Derating Curve, Figure 1
Case Temperature
Input Current
Output Current
Insulation Resistance at TS, VIO = 500 V
VIORM
VPR
VPR
VPR
VPR
VTR
I to IV
I to III
I to II
40/105/21
40/125/21
2
560
1050
672
896
672
4000
TS
IS, INPUT
IS, OUTPUT
Rs
150
160
170
>109
This isolator is suitable for basic isolation only within the safety limit data. Maintenance of the safety data shall be ensured by means of protective circuits.
The * marking on the package denotes DIN EN 60747-5-2 approval for 560 VPEAK working voltage.
Unit
VPEAK
VPEAK
VPEAK
VPEAK
VPEAK
VPEAK
°C
mA
mA
–6– REV. E

6 Page









ADuM1100 pdf, datenblatt
ADuM1100
Given the geometry of the receiving coil in the ADuM1100 and an
imposed requirement that the induced voltage be at most 50% of
the 0.5 V margin at the decoder, a maximum allowable magnetic
field is calculated as shown in Figure 8.
100
10
1
0.1
The preceding magnetic flux density values correspond to specific
current magnitudes at given distances away from the ADuM1100
transformers. Figure 9 expresses these allowable current magnitudes
as a function of frequency for selected distances. As can be seen,
the ADuM1100 is extremely immune and can be affected only
by extremely large currents operated at high frequency and very
close to the component. For the 1 MHz example noted, one
would have to place a current of 0.5 kA 5 mm away from the
ADuM1100 to affect the component’s operation.
1000
100
DISTANCE = 1m
0.01
0.001
1k
10k 100k 1M 10M
MAGNETIC FIELD FREQUENCY (Hz)
100M
Figure 8. Maximum Allowable External Magnetic Field
For example, at a magnetic field frequency of 1 MHz, the maximum
allowable magnetic field of 0.2 KGauss induces a voltage of
0.25 V at the receiving coil. This is about 50% of the sensing
threshold and will not cause a faulty output transition. Similarly,
if such an event were to occur during a transmitted pulse (and was
of the worst-case polarity), it would reduce the received pulse
from >1.0 V to 0.75 V—still well above the 0.5 V sensing
threshold of the decoder.
10
DISTANCE = 100mm
1
DISTANCE = 5mm
0.1
0.01
1k
10k 100k 1M 10M
MAGNETIC FIELD FREQUENCY (Hz)
100M
Figure 9. Maximum Allowable Current for
Various Current-to-ADuM1100 Spacings
Note that at combinations of strong magnetic field and high
frequency, any loops formed by printed circuit board traces could
induce sufficiently large error voltages to trigger the thresholds
of succeeding circuitry. Care should be taken in the layout of
such traces to avoid this possibility.
–12–
REV. E

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