Analog Devices Inc. ADuM4160 USB Digital Isolator
Analog Devices Inc. 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 the 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 in simplicity, power management, and robust operation.
The isolator has propagation delay comparable to that of a standard hub and cable. It operates with the supply voltage on either side ranging from 3.1 V to 5.5 V, 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 rate
- Bidirectional communication
- Short-circuit protection for xD+ and xD- lines
- 3.3V and 5V (dual mode power configuration) operation
- Class 3A contact ESD performance per ANSI/ESD STM5.1-2007
- 105°C High temperature operation
- >25kV/μs High common-mode transient immunity
Applications
- USB Peripheral Isolation
- Isolated USB Hub
- Medical Applications
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Functional Block Diagram
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