REV. E

a

ADuM1100

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.

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.

iCoupler

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

APPLICATIONS

Digital Fieldbus Isolation

Opto-Isolator Replacement

Computer-Peripheral Interface

Microprocessor System Interface

General Instrumentation and Data Acquisition

Applications

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.

FUNCTIONAL BLOCK DIAGRAM

WATCHDOG

E

N

C

O

D

E

D

E

C

O

D

E

UPDATE

(DATA IN)

(DATA OUT)

ADuM1100

FOR PRINCIPLES OF OPERATION, SEE METHOD OF OPERATION,

DC CORRECTNESS, AND MAGNETIC FIELD IMMUNITY SECTION.