FEATURES

Qualified for automotive applications

Low power operation

5 V operation

1.0 mA per channel maximum @ 0 Mbps to 2 Mbps

3.5 mA per channel maximum @ 10 Mbps

31 mA per channel maximum @ 90 Mbps

3 V operation

0.7 mA per channel maximum @ 0 Mbps to 2 Mbps

2.1 mA per channel maximum @ 10 Mbps

20 mA per channel maximum @ 90 Mbps

Bidirectional communication

3 V/5 V level translation

High temperature operation: 125°C

High data rate: dc to 90 Mbps (NRZ)

Precise timing characteristics

2 ns maximum pulse width distortion

2 ns maximum channel-to-channel matching

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

Output enable function

16-lead SOIC wide body package

RoHS-compliant models available

Safety and regulatory approvals

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

CSA Component Acceptance Notice #5A

VDE Certificate of Conformity

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

VIORM = 560 V peak

TÜV approval: IEC/EN/UL/CSA 61010-1

APPLICATIONS

General-purpose multichannel isolation

SPI interface/data converter isolation

RS-232/RS-422/RS-485 transceivers

Industrial field bus isolation

Automotive systems

 

GENERAL DESCRIPTION

The ADuM140x1 are quad-channel digital isolators based on

Analog Devices, Inc., iCoupler® technology. Combining high

speed CMOS and monolithic air core transformer technology,

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 typical optocoupler concerns regarding uncertain

current transfer ratios, nonlinear transfer functions, and

temperature and lifetime effects are eliminated with the simple

iCoupler digital interfaces and stable performance characteristics.

The need for external drivers and other discrete components

is eliminated with these iCoupler products. Furthermore,

iCoupler devices consume one-tenth to one-sixth of the power

of optocouplers at comparable signal data rates.

The ADuM140x isolators provide four independent isolation

channels in a variety of channel configurations and data rates

(see the Ordering Guide). 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 a

voltage translation functionality across the isolation barrier. In

addition, the ADuM140x provides low pulse width distortion

(<2 ns for CRW grade) and tight channel-to-channel matching

(<2 ns for CRW grade). Unlike other optocoupler alternatives,

the ADuM140x isolators have a patented refresh feature that

ensures dc correctness in the absence of input logic transitions

and when power is not applied to one of the supplies.

1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329.