ADUM1245 Micropower, Dual-Channel Digital Isolators, Default Low (2/0 Channel Directionality)

Outstanding Power Performance. These 3 kV digital isolators operate with 2.5 V supplies. Distortion and Noise Protection. Low pulse width distortion (< 8 ns for A grade models) and an input glitch filter for extraneous noise disturbance protection.

TheADuM1240/ADuM1241/ADuM1245/ADuM1246 are micropower, dual-channel digital isolators based on the Analog Devices, Inc., iCoupler® technology.( Quad-channel products available). Combining high speed CMOS and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to alternatives, such as optocoupler devices, yet require the lowest power of any available isolation product.

Packaged in an 8-lead SOIC, this series of quad, 3 kV digital isolation devices operate with supplies as low as 2.5 V, offering the lowest available power consumption at a fraction of the power of comparable isolators at comparable data rates (up to 2 Mbps). In addition, all models provide low pulse width distortion (<8 ns for A grade) and an input glitch filter for extraneous noise disturbance protection.

All models operate with the supply voltage on either side ranging as low as 2.25 V, providing compatibility with lower voltage systems, as well as enabling voltage translation functionality across the isolation barrier. All products also have an output default logic state in the absence of the input power. When power is first applied, or is not yet applied to the input side, the ADuM1240 and ADuM1241 have a default high output and the ADuM1245 and ADuM1246 have a default low output.

Product Highlights
  • Outstanding Power Performance. These 3 kV digital isolators operate with 2.5 V supplies.
  • Distortion and Noise Protection. Low pulse width distortion (< 8 ns for A grade models) and an input glitch filter for extraneous noise disturbance protection.

iCoupler Technology. Patented Analog Devices technology combining high speed CMOS and monolithic air core transformer technologies.

Applications
  • General-purpose, low power, multichannel isolation
  • 1 MHz low power SPI
  • 4 mA to 20 mA loop process control
Features and Benefits
  • Ultralow power operation
    3.3 V operation
    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
    3 μA per channel quiescent current, refresh enabled
    0.1 μA per channel quiescent current, refresh disabled
  • 116 μA/Mbps per channel typical dynamic current
  • Small, 8-lead SOIC package
  • Bidirectional communication
  • CSA Component Acceptance Notice #5A (pending)
  • Up to 2 Mbps data rate (NRZ)
  • High temperature operation: 125°C
  • Quad-channel products available
  • See datasheet for additional features
Interface & Isolation
Automotive
  • Powertrain Body and Chassis
ADUM1245 IBIS Models
Data Sheets
Documentnote
ADuM1240/ADuM1241/ADuM1245/ADuM1246: Micropower, Dual-Channel Digital Isolators Data Sheet (Rev. B)PDF 457.69 K
User Guides
Documentnote
UG-663: Evaluating the iCoupler ADuM1240ARSZ/ADuM1241ARSZ/ADuM1245ARSZ/ADuM1246ARSZ with the EVAL-ADuM1241EBZ Evaluation SystemPDF 469 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADUM1245ARSZ Production20 ld SSOPOTH 66-40 to 125C1.61.39Y
ADUM1245ARSZ-RL7 Production20 ld SSOPREEL 500-40 to 125C01.39Y
ADUM1245ARZ Production8 ld SOICOTH 98-40 to 125C1.61.39Y
ADUM1245ARZ-RL7 Production8 ld SOICREEL 1000-40 to 125C01.39Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-ADUM1241EBZEvaluation Board49Y
Reference Materials
ADuM1240/ADuM1241/ADuM1245/ADuM1246:微功耗双通道数字隔离器,默认高电平(2/0通道方向性) (Rev. B) adum1240
ADuM1240/ADuM1241/ADuM1245/ADuM1246: Micropower, Dual-Channel Digital Isolators Data Sheet (Rev. B) adum1240
SSOP Package adum1245
SOIC Package adum1245
UG-663: Evaluating the iCoupler ADuM1240ARSZ/ADuM1241ARSZ/ADuM1245ARSZ/ADuM1246ARSZ with the EVAL-ADuM1241EBZ Evaluation System adum1240
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