ADUM3481
Info: : PRODUCTION
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ADUM3481

Small, 3.75 kV RMS Quad Digital Isolators (3/1 Channel Directionality)

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $2.05
Features
  • Up to 25 Mbps data rate (NRZ)
  • Low propagation delay: 25 ns typical
  • Low dynamic power consumption
  • 1.8 V to 5 V level translation
  • High common-mode transient immunity: >25 kV/µs
  • Output default select
  • 20-lead, RoHS-compliant, SSOP package
  • See data sheet for additional features
Additional Details
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The ADuM3480 / ADuM3481 / ADuM3482 are quad-channel 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 typical propagation delay reduced to 25 ns, pulse width distortion is also halved.

The four channels of the ADuM3480 / ADuM3481 / ADuM3482 are available in a variety of channel configurations with two data rate grades up to 25 Mbps (see the Ordering Guide section). All models use separate core and I/O power supplies. The core operates between 3.0 V and 5.5 V, whereas the I/O supply can range from 1.8 V to 5.5 V. If operation is required within the range of the core supply, the two supplies can be tied together to allow single-supply operation. When the I/O must interface with logic levels that are different from the core supply voltage, then the I/O supply can be operated independently of the core supply over a wider range. The minimum I/O supply voltage is 1.8 V, allowing compatibility with low voltage logic. Both core and I/O supplies are required for proper operation.

APPLICATIONS

  • General-purpose multichannel isolation
  • SPI interface/data converter isolation
  • Industrial field bus isolation
Part Models 4
1ku List Price Starting From $2.05

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADUM3481ARSZ
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ADUM3481ARSZ-RL7
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ADUM3481BRSZ
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ADUM3481BRSZ-RL7
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-ADUM3481

ADUM3481 Evaluation Board

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EVAL-ADUM3481

ADUM3481 Evaluation Board

ADUM3481 Evaluation Board

Product Detail

The EVAL-ADuM3481EBZ supports the ADuM3480/ ADuM3481/ADuM3482, which are 3750 V isolation rating, 4-channel iCoupler® isolators. The evaluation board provides a JEDEC standard 20-lead SSOP pad layout, support for signal fanout, and loopback as well as optimal bypass capacitance. Signals can be wired onto the board as well as brought onto the board through edge-mounted SMA connectors (sold separately) or terminal blocks for power connections. The board includes 200 mil header positions for compatibility with Tektronix active probes.

The board follows best printed circuit board (PCB) design practices for 4-layer boards, including a full power and ground plane on each side of the isolation barrier. No other EMI or noise mitigation design features are included on this board. In cases of very high speed operation or when ultralow emissions are required, refer to the AN-1109 application note for additional board layout techniques.

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