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ADUM5240 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADUM5240
Description  Dual-Channel Isolators with Integrated DC/DC Converter, 50 mW
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADUM5240 Datasheet(HTML) 1 Page - Analog Devices

 
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Dual-Channel Isolators with
Integrated DC/DC Converter, 50 mW
Preliminary Technical Data
ADuM5240/ADuM5241/ADuM5242
Rev. PrN
November 17, 2006
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.
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
© 2006 Analog Devices, Inc. All rights reserved.
FEATURES
Integrated isolated DC/DC converter
Regulated 5V/10 mA output
Dual dc-to-10 Mbps (NRZ) signal isolation channels
Narrow body SOIC 8-lead package
High temperature operation: 105°C
Precise timing characteristics:
3 ns maximum pulse-width distortion
3 ns maximum channel-to-channel matching
70 ns maximum propagation delay
High common-mode transient immunity: > 25 kV/μs
Safety and regulatory approvals (pending)
UL recognition
2500 V rms for 1 minute per UL 1577
CSA component acceptance notice #5A
VDE certificate of conformity
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; DIN EN 60950: 2000
VIORM = 425 V peak
GENERAL DESCRIPTION
The ADuM524x1 are dual-channel digital isolators having an
integrated DC/DC converter. Based on Analog Devices’
iCoupler® technology, the DC/DC converter provides up to
50 mW of regulated, isolated power at +5V. This eliminates the
need for a separate isolated DC/DC converter in low-power
isolated designs. Analog Devices’ chip-scale transformer
iCoupler® technology is used both for the isolation of the logic
signals as well as for the DC/DC converter. The result is a small
form-factor total-isolation solution.
ADuM524x units may be used in combination or with other
iCoupler products to achieve greater channel counts.
The ADuM524x isolators provide two independent isolation
channels in a variety of channel configurations and data rates
(see Ordering Guide) operating off a 5V input supply.
1 Protected by U.S. Patents 5,952,849 6,873,065 and 7,075,329 Other patents
pending.
FUNCTIONAL BLOCK DIAGRAM
GND
ISO
V
ISO
V
OA
7
V
OB
6
DECODE
ENCODE
DECODE
ENCODE
5
osc.
rect.
8
V
DD
GND
V
IA
2
V
IB
3
4
1
Figure 1. ADuM5240 Functional Block
Diagram
GND
ISO
V
ISO
V
IA
7
V
OB
6
ENCODE
DECODE
DECODE
ENCODE
5
osc.
rect.
8
V
DD
GND
V
OA
2
V
IB
3
4
1
Figure 2. ADuM5241 Functional Block
Diagram
GND
ISO
V
ISO
V
IA
7
V
IB
6
ENCODE
DECODE
ENCODE
DECODE
5
osc.
rect.
8
V
DD
GND
V
OA
2
V
OB
3
4
1
GND
ISO
V
ISO
V
IA
7
V
IB
6
ENCODE
DECODE
ENCODE
DECODE
5
osc.
rect.
8
V
DD
GND
V
OA
2
V
OB
3
4
1
Figure 3. ADuM5242 Functional Block
Diagram


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