ADI USB isolator aids sharing of medical files
Analog Devices
ADuM4160 USB isolator
Analog Devices (ADI) has released a single-IC USB isolator (universal serial bus isolator) that simplifies isolated USB-port implementation in system-critical medical and industrial equipment.
USB ports provide a standardised, straightforward method of connecting and disconnecting peripheral devices to and from a computer without rebooting or turning off the system.
When information is needed, USB-compatible medical devices make it simple and efficient for medical professionals to share vital patient files or data at any time and between locations.
USB-enabled devices enable healthcare professionals to use a range of commercially available, cost-efficient peripherals.
The ADuM4160 USB isolator uses ADI's Icoupler digital-isolation technology and offers 5-kV RMS medical-grade isolation, upstream short-circuit protection and isolated 1.5-Mbps and 12-Mbps data rates (IEC 60601-1 medical-safety approvals pending).
The USB 2.0-compliant device provides isolated USB functionality at a fraction of the cost and complexity of current data-isolation methods and makes it possible for medical and industrial-design engineers to cut implementation costs by up to 25 per cent, reduce the size of designs by as much as 50 per cent and trim development time from months to weeks.
The ADuM4160 is based on ADI's Icoupler technology, which combines high-speed CMOS (complementary metal oxide semiconductor) and chip-scale micro-transformer technology.
The ADuM4160 can be implemented in low- and full-speed USB-compliant systems.
It operates off the 5V USB supply or system-supplied 3.3V power using an internal regulator.
The ADuM4160 also provides isolated control of the pull-up resistor, allowing the peripheral to control connection timing.
The device's low idle current (2mA max) eliminates the need for a suspend state.
ADI's ADuM5000 0.5W isolated DC-to-DC converter can provide isolated power to the secondary side of the ADuM4160 USB isolator.
Other complementary components include the ADSP-BF535 Blackfin embedded processor/DSP and ADG790 low-voltage CMOS multimedia switch.
The ADuM4160 USB isolator is sampling now and will be available in production quantities in June 2009.
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