ADUM1445 Micropower Quad-Channel Digital Isolator, Default Low (4/0 Channel Directionality)

The ADUM1445 is a micropower, quad-channel digital isolator which has a default low and 4/1 directionality based on the Analog Devices, Inc., iCoupler® technology, (Dual-channel products available). Combining high speed, complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices, while requiring the lowest power of any available isolation product. The ENX signals can be used to disable the internal refresh, which lowers the total quiescent current to less than 1 µA.

The ADuM1440/ADuM1441/ADuM1442/ADuM1445/ ADuM1446/ADuM1447 family of quad 2.5 kV digital isolation devices are packaged in a small 16-lead QSOP and 20-lead SSOP. While most 4-channel isolators come in 16-lead wide SOIC packages, the ADuM1440/ ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 frees almost 70% of board space and yet can still withstand high isolation voltages and meet regulatory requirements, such as UL and CSA standards (pending). In addition to the space savings, the ADuM1440/ADuM1441/ADuM1442/ADuM1445/ ADuM1446/ADuM1447 operates with supplies as low as 2.25 V.

Despite the low power consumption, all models of the ADuM1440/ ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447 provide low, pulse width distortion <8 ns. In addition, every model has an input glitch filter to protect against extraneous noise disturbances.

APPLICATIONS
  • General-purpose, low power multichannel isolation
  • 1 MHz, low power peripheral interface (SPI)
  • 4 mA to 20 mA loop process controls
Features and Benefits
  • Ultralow power operation
    3.3 V operation (typical)
    5.6 µA per channel quiescent current, refresh enabled
    0.3 µA per channel quiescent current, refresh disabled
    148 µA/Mbps per channel typical dynamic current
  • 2.5 V operation (typical)
    3.4 µA per channel quiescent current, refresh enabled
    0.1 µA per channel quiescent current, refresh disabled
    117 µA/Mbps per channel typical dynamic current
  • Small, 16-lead QSOP and
    20-lead SSOP
  • Bidirectional communication
  • Up to 2 Mbps data rate (NRZ)
  • High temperature operation: 125°C
  • High common-mode transient immunity: >25 kV/µs
  • Dual-channel products available
  • See datasheet for additional features
Interface & Isolation
Automotive
  • Powertrain Body and Chassis
Aerospace and Defense
  • Solutions
ADUM1445 IBIS Models
Data Sheets
Documentnote
ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447: Micropower Quad-Channel Digital Isolators Data Sheet (Rev. D)PDF 426 kB
User Guides
Documentnote
UG-630: Evaluating the iCoupler ADuM1440ARQZ/ADuM1441ARQZ/ ADuM1442ARQZ/ADuM1445ARQZ/ADuM1446ARQZ/ADuM1447ARQZ with the EVAL-ADuM144xQSOP16-EBZ Evaluation SystemPDF 321 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADUM1445ARQZ Production16 ld QSOPOTH 98-40 to 125C2.291.98Y
ADUM1445ARQZ-RL7 Production16 ld QSOPREEL 1000-40 to 125C01.98Y
ADUM1445ARSZ Production20 ld SSOPOTH 66-40 to 125C2.862.48Y
ADUM1445ARSZ-RL7 Production20 ld SSOPREEL 500-40 to 125C02.48Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-ADUM1441EBZEvaluation Board49Y
Reference Materials
ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447:微功耗四通道数字隔离器 (Rev. A) adum1440
ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447: Micropower Quad-Channel Digital Isolators Data Sheet (Rev. D) adum1440
QSOP Package adum1445
SSOP Package adum1445
UG-630: Evaluating the iCoupler ADuM1440ARQZ/ADuM1441ARQZ/ ADuM1442ARQZ/ADuM1445ARQZ/ADuM1446ARQZ/ADuM1447ARQZ with the EVAL-ADu adum1440
环路供电发射器的设计权衡考量 aducm360
MS-2644:超低功耗开启高速隔离应用之门 adum1400