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PRODUCT DESCRIPTION
The ADuM1280/ADuM1281/ADuM1285/ADuM12861 are dualchannel digital isolators based on the 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 and other integrated couplers. With propagation delay at 23 ns, pulse width distortion is less than 2 ns for C grade. Channel-to-channel matching is tight at 5 ns for C grade.
The two channels of the ADuM1280/ADuM1281/ ADuM1285/ADuM1286 are
independent isolation channels and are available in two channel
configurations with three different data rates up to 100 Mbps (see
the Ordering Guide). Industrial grade models operate with the
supply voltage on either side ranging from 3.135 V to 5.5 V and the
automotive grades operate from 3.135 V to 5.5 V, providing
compatibility with lower voltage systems as well as enabling a
voltage translation functionality across the isolation barrier.
Unlike other optocoupler alternatives, the ADuM1280/ADuM1281/
ADuM1285/ADuM1286 isolators have a patented refresh feature that
ensures dc correctness in the absence of input logic transitions.
When power is first applied or is not yet applied to the input
side, the ADuM1280 and ADuM1281 have a default high output, and the
ADuM1285 and ADuM1286 have a default low output. For more
information on safety and regulatory approvals, go to
www.analog.com/icouplersafety.
PRODUCT PROPERTIES
Product Status | Active |
Technology | Magnetic Coupling |
Type | General Purpose |
Isolated Power | No |
Number of Channels | 2 |
Inputs - Side 1/Side 2 | 2/0 |
Channel Type | Unidirectional |
Voltage - Isolation | 3000Vrms |
Common Mode Transient Immunity (Min) | 25kV/µs |
Data Rate | 100Mbps |
Propagation Delay tpLH / tpHL (Max) | 24ns, 24ns |
Pulse Width Distortion (Max) | 2ns |
Rise / Fall Time (Typ) | 2.5ns, 2.5ns |
Voltage - Supply | 3V ~ 5.5V |
Operating Temperature | -40°C ~ 125°C |
Mounting Type | Surface Mount |
Package / Case | 8-SOIC (0.154", 3.90mm Width) |
Supplier Device Package | 8-SOIC |
Base Product Number | ADUM1280 |