ADUM7240 1 kV Dual Channel Digital Isolators (2/0 channel directionality)

The ADuM7240/ADuM7241 are dual channel digital isolators based on the Analog Devices, Inc., iCoupler® technology. Combining high speed CMOS and monolithic air core trans-former technologies, these isolation components provide outstanding performance characteristics superior to the alterna-tives, such as optocoupler devices and other integrated couplers.

The ADuM7240/ADuM7241 dual 1 kV digital isolation devices are packaged in a narrow-body 8-lead SOIC. The ADuM7240/ ADuM7241 offer a cost-effective option compared to 2.5 kV or 5 kV isolators where only functional isolation is needed.

Like other Analog Devices isolators, the ADuM7240/ADuM7241 offer very low power consumption, consuming one-tenth to one-sixth the power of comparable isolators at data rates up to 25 Mbps. Despite the low power consumption, all models of the ADuM7240/ADuM7241 provide low pulse width distortion (<5 ns for C grade). In addition, every model has an input glitch filter to protect against extraneous noise disturbances.

The ADuM7240/ADuM7241 provide two independent isolation channels and are available in two channel configurations with 1 Mbps or 25 Mbps data rates (see the Ordering Guide). All models operate with the supply voltage on either side ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. The ADuM7240/ADuM7241 also have an output default high logic state in the absence of input power.

Applications
  • General-purpose multichannel isolation
  • Data converter isolation
  • Industrial field bus isolation
Features and Benefits
  • Narrow-body, RoHS-compliant, 8-lead SOIC
  • Safety and regulatory approvals
    • UL recognition
    • UL 1577: 1000 V rms for 1 minute
  • Low power operation
    • 5 V operation
    • 2.4 mA per channel maximum at 0 Mbps to 1 Mbps
    • 11.8 mA per channel maximum at 25 Mbps
  • 3.3 V operation
    • 1.7 mA per channel maximum at 0 Mbps to 1 Mbps
    • 8.2 mA per channel maximum at 25 Mbps
  • Bidirectional communication
  • Up to 25 Mbps data rate (NRZ)
  • 3 V/5 V level translation
  • High temperature operation: 105°C
  • High common-mode transient immunity: >15 kV/μs
Interface & Isolation
Data Sheets
Documentnote
ADuM7240/ADuM7241: 1 kV, Dual Channel Digital Isolators Datasheet (Rev. B)PDF 323 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADUM7240ARZ Production8 ld SOICOTH 98-40 to 105C0.970.8Y
ADUM7240ARZ-RL7 Production8 ld SOICREEL 1000-40 to 105C00.8Y
ADUM7240CRZ Production8 ld SOICOTH 98-40 to 105C1.41.16Y
ADUM7240CRZ-RL7 Production8 ld SOICREEL 1000-40 to 105C01.16Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-1CH2CHSOICEBZ1 and 2 Channel Unpopulated SOIC Evaluation Board49Y
EVAL-ADUM226N0EBZADuM226N0 Populated 2 Channel ISO Evaluation Board49Y
Reference Materials
ADuM7240/ADuM7241: 1 kV, Dual Channel Digital Isolators Datasheet (Rev. B) adum7240
数字隔离器产品选型与资源指南 adum1233