- Triple-Channel Digital Isolators
GENERAL DESCRIPTION
The ADuM1300/ADuM13011 are triple-channel digital isolators based
on the Analog Devices, Inc., iCoupler® technology. Combining high speed CMOS and monolithic
transformer technology, 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 of the power of
optocouplers at comparable signal data rates.
The ADuM1300/ADuM1301 isolators provide three independent isolation
channels in a variety of channel configurations and data rates (see
the Ordering Guide). Both 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 ADuM1300/ADuM1301 provide 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 ADuM1300/ADuM1301 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.
