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Fieldbus MAU for safety-critical apps rolls in Asia

Posted: 14 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Transceivers? process automation? security? Fieldbus? AMIS?

AMIS-49200 Fieldbus MAU

AMI Semiconductor (AMIS) has introduced in the Asian market the AMIS-49200 Fieldbus media attachment unit (MAU) for industrial process automation applications. The device meets the specifications of the IEC-61158-2, H1 (ISA-SP50.02-1992) and EN 50170 PHY standard, including Foundation Fieldbus H1 and Profibus PA protocols.

The device is the latest addition to the company's line of process automation transceivers for use in safety-critical applications such as oil refineries, chemical processing and water treatment plants. The device is a physical interface between the bus wiring and the actual measurement device targeting industrial process automation applications, specifically Foundation Fieldbus H1 devices Type 111 and Type 112 per Foundation Fieldbus Specification FF-816 (31.25Kbps PHY Profile).

Foundation Fieldbus is an all-digital, two-way communications system intended for use in intrinsically safe sensor-to-computer applications where distribution and transfer of data, integrity of control loops and the ability to integrate dissimilar control systems are essential. Typical applications include closed-loop continuous control, batch sequencing, high-speed process automation, information integration, recipe management, data gathering, legacy system integration and network integration.

"The process automation market is moving from analog to digital bus communication and has seen significant volume growth for this type of device," said Ramesh Ramchandani, VP and general manager of the mixed-signal ASSP division at AMIS. "AMIS offers a portfolio of transceiver products for standards like LIN, CAN and HART and offers the only replacement on the market for the Yokagawa ?SAA22Q. AMIS has a long history of supplying the process automation market with ICs such as the A5191HRT modem."

In most applications, the AMIS-49200 Fieldbus MAU can be used as a pin-for-pin replacement for the Yokagawa ?SAA22Q, which is no longer in production. The AMIS-49200 is currently available at a price of $9.38 per 1,000 units.




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