2500Vrms General Purpose Digital Isolator IC 4 Channel 10Mbps CMTI 16 SOIC ADUM1400BRWZ

ADUM1400BRWZ General Purpose Digital Isolator 2500Vrms 4 Channel 10Mbps 25kV/µs CMTI 16-SOIC

GENERAL DESCRIPTION

The ADuM140x are 4-channel digital isolators based on Analog

Devices’ 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

optocouplers. 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 discretes

is eliminated with these iCoupler products. Furthermore,

iCoupler devices consumes one-tenth to one-sixth 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 during power-up/power-down conditions.