ADUM2401BRWZ-RL

The ADuM240x are 4-channel digital isolators based on Analog Devices' iCoupler technology. Combining high speed CMOS and monolithic air core 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 discretes is eliminated with these iCoupler products. Furthermore, iCoupler devices run at one-tenth to one-sixth the power of optocouplers at comparable signal data rates. The ADuM240x isolators provide four independent isolation channels in a variety of channel configurations and data rates. The ADuM240x models operate with the supply voltage of 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 ADuM240x provide low pulse-width distortion (<2 ns for CRWZ grade) and tight channel-to-channel matching (<2 ns for CRWZ grade). Unlike other optocoupler alternatives, the ADuM240x isolators have a patented refresh feature that ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.

Applications

• General-purpose, high voltage, multichannel isolation
• Medical equipment
• Motor drives
• Power supplies

Key features

• Low power operation
• 5V operation: 1.0 mA per channel max @ 0 Mbps to 2 Mbps, 3.5 mA per channel max @ 10 Mbps, 31 mA per channel max @ 90 Mbps
• 3V operation: 0.7 mA per channel max @ 0 Mbps to 2 Mbps, 2.1 mA per channel max @ 10 Mbps, 20 mA per channel max @ 90 Mbps
• Bidirectional communication
• 3 V/5 V level translation
• High temperature operation: 105°C
• High data rate: dc to 90 Mbps (NRZ)
• Precise timing characteristics
• 2 ns max pulse-width distortion
• 2 ns max channel-to-channel matching
• High common-mode transient immunity: >25 kV/μs
• Output enable function
• Wide body SOIC 16-lead package
• Safety and regulatory approvals (pending)
• UL recognition: 5000 V rms for 1 minute per UL 1577
• CSA component acceptance notice #5A: IEC 60950-1: 600 V rms (reinforced), IEC 60601-1: 250 V rms (reinforced)
• VDE certificate of conformity
• DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
• DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
• ViORM = 848 V peak