Analog Devices Inc. ADuM4160 USB Digital Isolators
Analog Devices ADuM4160 USB Digital Isolator is a USB port isolator based on iCoupler® technology. ADI ADuM4160 combines high-speed CMOS and monolithic air-core transformer technology to provide outstanding performance characteristics. The device is easily integrated with low and full speed USB-compatible peripheral devices. ADuM4160 provides mechanisms for detecting the direction of data flow and control over the state of the output buffers. Data direction is determined on a packet-by-packet basis.
ADI ADuM4160 uses edge-detection-based iCoupler technology in conjunction with internal logic to implement a transparent, easily configured upstream-facing port isolator. Isolating an upstream-facing port provides several advantages, including simpler power management and more robust operation.
The isolator has a propagation delay comparable to that of a standard hub and cable. It operates with the supply voltage on either side ranging from 3.1V to 5.5V, allowing connection directly to VBUS by internally regulating the voltage to the signaling level. ADuM4160 provides isolated control of the pull-up resistor to allow the peripheral to control connection timing.
Features
- Fully USB 2.0 compliant
- 1.5Mbps and 12Mbps Low and full speed data rates
- Bidirectional communication
- Short-circuit protection for xD+ and xD- lines
- +105°C high temperature operation
- 3.3V and 5V (dual mode power configuration) operation
- Class 3A contact ESD performance per ANSI/ESD STM5.1-2007
- >25kV/μs high common-mode transient immunity
Applications
- USB peripheral isolation
- Isolated USB Hub
- Medical
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Functional Block Diagram
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