Quad-Channel Digital Isolators

ADuM1410/ADuM1411/ADuM1412

Rev. E

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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

www.analog.com

Fax: 781.461.3113

©2006 Analog Devices, Inc. All rights reserved.

FEATURES

Low power operation

5 V operation

1.3 mA per channel max @ 0 Mbps to 2 Mbps

4.0 mA per channel max @ 10 Mbps

3 V operation

0.8 mA per channel max @ 0 Mbps to 2 Mbps

1.8 mA per channel max @ 10 Mbps

Bidirectional communication

3 V/5 V level translation

High temperature operation: 105°C

Up to 10 Mbps data rate (NRZ)

Programmable default output state

High common-mode transient immunity: >25 kV/μs

16-lead, Pb-free, SOIC wide body package

Safety and regulatory approvals

UL recognition: 2500 V rms for 1 minute per UL 1577

CSA component acceptance notice #5A

VDE certificate of conformity (pending)

DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01

DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000

APPLICATIONS

General-purpose multichannel isolation

SPI® interface/data converter isolation

RS-232/RS-422/RS-485 transceiver

Industrial field bus isolation

FUNCTIONAL BLOCK DIAGRAMS

ENCODE

DECODE

ENCODE

DECODE

ENCODE

DECODE

ENCODE

DECODE

DISABLE

CTRL

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

ADuM1410

Figure 1. ADuM1410 Functional Block Diagram

DECODE

ENCODE

ENCODE

DECODE

ENCODE

DECODE

ENCODE

DECODE

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

ADuM1411

Figure 2. ADuM1411 Functional Block Diagram

DECODE

ENCODE

DECODE

ENCODE

ENCODE

DECODE

ENCODE

DECODE

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

ADuM1412

Figure 3. ADuM1412 Functional Block Diagram

GENERAL DESCRIPTION

The ADuM141x1 are four-channel digital isolators based on

Analog Devices, Inc. iCoupler® technology. Combining high

speed CMOS and monolithic air core transformer technologies,

these isolation components provide outstanding performance

characteristics superior to alternatives such as optocoupler devices.

By avoiding the use of LEDs and photodiodes, iCoupler devices

remove the design difficulties commonly associated with opto-

couplers. The usual concerns that arise with optocouplers, such

as uncertain current transfer ratios, nonlinear transfer functions,

and temperature and lifetime effects are eliminated with the

simple iCoupler digital interfaces and stable performance charac-

teristics. The need for external drivers and other discrete

components is eliminated with these iCoupler products.

Furthermore, iCoupler devices consume one-tenth to one-sixth

the power of optocouplers at comparable signal data rates.

The ADuM141x isolators provide four independent isolation

channels in a variety of channel configurations and data rates

(see the Ordering Guide) up to 10 Mbps. All models operate

with the supply voltage on either side ranging from 2.7 V to 5.5 V,

providing compatibility with lower voltage systems as well as

enabling voltage translation functionality across the isolation

barrier. All products also have a default output control pin. This

allows the user to define the logic state the outputs are to adopt

in the absence of the input power. Unlike other optocoupler

alternatives, the ADuM141x isolators have a patented refresh

feature that ensures dc correctness in the absence of input logic

transitions and during power-up/power-down conditions.