ADI ADUM1200CR

The ADuM1200/ADuM1201 are dual-channel digital isolators based on iCoupler technology. Combining high speed CMOS and monolithic transformer technologies, these isolation components provide outstanding performance characteristics superior to alternatives, such as optocouplers.

By avoiding the use of LEDs and photodiodes, iCoupler devices remove the design difficulties commonly associated with optocouplers.

The typical optocoupler concerns regarding uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects are eliminated with the simple iCoupler digital interfaces and stable performance characteristics. The need for external drivers and other discrete components is eliminated with these iCoupler products. Furthermore, iCoupler devices consume one-tenth to one-sixth the power of optocouplers at comparable signal data rates.

The ADuM1200/ADuM1201 isolators provide two independent isolation channels in a variety of channel configurations and data rates. Both devices 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. In addition, the ADuM1200/ADuM1201 provide low pulse width distortion (<3 ns for CR grade) and tight channel-to-channel matching (<3 ns for CR grade). Unlike other optocoupler alternatives, the ADuM1200/ADuM1201 isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.

The ADuM1200W and ADuM1201W are automotive grade versions qualified for 125°C operation.

• Narrow body, RoHS-compliant, SOiC 8-lead package
• Low power operation
• 5V operation
• 1.1 mA per channel maximum at 0 Mbps to 2 Mbps
• 3.7 mA per channel maximum at 10 Mbps
• 8.2 mA per channel maximum at 25 Mbps
• 3V operation
• 0.8 mA per channel maximum at 0 Mbps to 2 Mbps
• 2.2 mA per channel maximum at 10 Mbps
• 4.8 mA per channel maximum at 25 Mbps
• Bidirectional communication
• 3 V/5 V level translation
• High temperature operation: 125°C
• High data rate: dc to 25 Mbps (NRZ)
• Precise timing characteristics
• 3 ns maximum pulse width distortion
• 3 ns maximum channel-to-channel matching
• High common-mode transient immunity: >25 kV/μs
• Safety and regulatory approvals
• UL recognition
• 2500 V rms for 1 minute per UL 1577
• CSA Component Acceptance Notice 5A
• VDE Certificate of Conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12, VIOM = 560V peak
• Qualified for automotive applications

• Size-critical multichannel isolation
• SPI interface/data converter isolation
• RS-232/RS-422/RS-485 transceiver isolation
• Digital field bus isolation
• Hybrid electric vehicles, battery monitor, and motor drive