AMI Semiconductor Introduces Fieldbus MAU for Industrial Process Automation Applications, Including Foundation Fieldbus H1 and Profibus PA

Device Meets Specifications of IEC Physical Layer Standards, Including Foundation Fieldbus and Profibus PA Protocols

POCATELLO, Idaho—(BUSINESS WIRE)—April 24, 2006— AMI Semiconductor (Nasdaq: AMIS), a designer and manufacturer of state-of-the-art integrated mixed-signal and structured digital products for the automotive, medical and industrial markets, today introduced the AMIS-49200 Fieldbus Media Attachment Unit (MAU) targeting industrial process automation applications. The AMIS-49200 meets the specifications of the IEC-61158-2, H1 (ISA-SP50.02-1992), and EN 50170 physical layer standard, including Foundation Fieldbus H1 and Profibus PA protocols.

The AMIS-49200 is the latest addition to AMI Semiconductor'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 (31.25 kbit/s Physical Layer 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, vice president 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 micron-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 micron-SAA22Q, which is no longer in production. The AMIS-49200 is currently available at a price of $9.38 per 1000 units.

About AMI Semiconductor

AMI Semiconductor (AMIS) is a leader in the design and manufacture of silicon solutions for the real world. As a widely recognized innovator in state-of-the-art integrated mixed-signal and structured digital products, AMIS is committed to providing customers with the optimal value, quickest time-to-market semiconductor solutions. Offering unparalleled manufacturing flexibility and dedication to customer service, AMI Semiconductor operates globally with headquarters in Pocatello, Idaho, European corporate offices in Oudenaarde, Belgium, and a network of sales and design centers located in the key markets of North America, Europe and the Asia Pacific region. For more information please visit the AMIS Web site at

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