ADI ADUM3201ARZ-RL7

The ADuM320x are dual-channel, digital isolators based on iCoupler technology. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as optocoupler devices. 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 ADuM320x isolators provide two independent isolation channels in a variety of channel configurations and data rates. Both parts 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. The ADuM320x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions. In comparison to the ADuM120x isolators, the ADuM320x isolators contain various circuit and layout changes to provide increased capability relative to system-level IEC 61000-4-x testing (ESD, burst, surge). The precise capability in these tests for either the ADuM120x or ADuM320x products is strongly determined by the design and layout of the user’s board or module.

• Enhanced system-level ESD performance per IEC 61000-4-x
• Narrow body, 8-lead SOIC, Pb-free package
• Low power operation
• 5 V operation: 1.6 mA per channel maximum @ 0 Mbps to 2 Mbps; 3.7 mA per channel maximum @ 10 Mbps; 7.5 mA per channel maximum @ 25 Mbps
• 3 V operation: 1.4 mA per channel maximum @ 0 Mbps to 2 Mbps; 2.4 mA per channel maximum @ 10 Mbps; 4.6 mA per channel maximum @ 25 Mbps
• Bidirectional communication
• 3 V/5 V level translation
• High temperature operation: 105°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 EN 60747-5-2 (VDE 0884 Part 2): 2003-01; DIN EN 60950 (VDE 0805): 2001-12; DIN EN 60950: 2000; V10RM = 560 V peak

• Size-critical multichannel isolation
• SPI interface/data converter isolation
• RS-232/RS-422/RS-485 transceiver isolation
• Digital field bus isolation