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

Product Details

The ADuM7240ADuM7241 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 alternatives, 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