ADUM1285 3kV rms, Default Low, Dual-Channel Digital Isolators (2/0 Channel Directionality)

Applications General-purpose multichannel isolation Data converter isolation Industrial field bus isolation

The ADuM1280/ADuM1281/ADuM1285/ADuM1286 are dual-channel digital isolators based on 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 20 ns, pulse width distortion is less than 2 ns for C grade. Channel-to-channel matching is tight at 5ns for C grade. The two channels of ADuM1280/ADuM1281/ADuM1285/ADuM1286 are independent isolation channels and are available in two channel configurations with 3 different data rates up to 100Mbps (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. Unlike other optocoupler alternatives, the ADuM128x 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.

Applications
  • General-purpose multichannel isolation
  • Data converter isolation
  • Industrial field bus isolation
Features and Benefits
  • Up to 100 Mbps data rate (NRZ)
  • Low propagation delay: 20 ns typical
  • Low dynamic power consumption
  • Bidirectional communication
  • 3V to 5V level translation
  • High temperature operation: 125°C
  • High common-mode transient immunity: >25 kV/μs
  • Default high output: ADuM1280/ADuM1281
  • Default low output: ADuM1285/ADuM1286
  • Narrow body, RoHS-compliant, 8-lead SOIC
  • See data sheet for additional features
  • Interface & Isolation
    Automotive
    • Powertrain Body and Chassis
    Data Sheets
    Documentnote
    ADuM1280/ADuM1281/ADuM1285/ADuM1286: 3 kV RMS Dual Channel Digital Isolators Datasheet (Rev. C)PDF 336 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADUM1285ARZ Production8 ld SOICOTH 98-40 to 125C1.060.88Y
    ADUM1285ARZ-RL7 Production8 ld SOICREEL 1000-40 to 125C00.88Y
    ADUM1285BRZ Production8 ld SOICOTH 98-40 to 125C1.361.12Y
    ADUM1285BRZ-RL7 Production8 ld SOICREEL 1000-40 to 125C01.12Y
    ADUM1285CRZ Production8 ld SOICOTH 98-40 to 125C1.571.3Y
    ADUM1285CRZ-RL7 Production8 ld SOICREEL 1000-40 to 125C01.3Y
    ADUM1285WARZ Production8 ld SOICOTH 98-40 to 125C1.651.46Y
    ADUM1285WARZ-RL7 Production8 ld SOICREEL 1000-40 to 125C01.46Y
    ADUM1285WBRZ Production8 ld SOICOTH 98-40 to 125C2.422.14Y
    ADUM1285WBRZ-RL7 Production8 ld SOICREEL 1000-40 to 125C02.14Y
    ADUM1285WCRZ Production8 ld SOICOTH 98-40 to 125C3.342.96Y
    ADUM1285WCRZ-RL7 Production8 ld SOICREEL 1000-40 to 125C02.96Y
    Reference Materials
    ADuM1280/ADuM1281/ADuM1285/ADuM1286: 3 kV RMS Dual Channel Digital Isolators Datasheet (Rev. C) adum1280
    ADuM1280/ADuM1281/ADuM1285/ADuM1286:3 kV RMS双通道数字隔离器 (Rev. B) adum1280
    数字隔离器产品选型与资源指南 adum1233