ADUM1201ARZ-RL7

GENERAL DESCRIPTION

The ADuM1200/ADuM12011 are dual-channel digital isolators

based on the Analog Devices, Inc., iCoupler® technology.

Combining high speed CMOS and monolithic transformer

technologies, these isolation components provide outstanding

performance characteristics superior to alternatives, such as

optocouplers.

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 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 ADuM1200/ADuM1201 isolators provide two independent

isolation channels in a variety of channel configurations and

data rates (see the Ordering Guide). Both devices 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 ADuM1200/ADuM1201 provide low

pulse width distortion (<3 ns for CR grade) and tight channelto-channel matching (<3 ns for CR grade). Unlike other

optocoupler alternatives, the ADuM1200/ADuM1201 isolators

have a patented refresh feature that ensures dc correctness in

the absence of input logic transitions and during powerup/power-down conditions.

The ADuM1200W and ADuM1201W are automotive grade

versions qualified for 125°C operation. See the Automotive

Products section for more information