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austriamicrosystems announces automotive high voltage companion ICs for LIN networked sensor and actuator slaves

AS8520 and AS8525 enable LIN networked sensor and actuator slave units with higher performance, smaller size and lower BOM

Unterpremstaetten, Austria (October 17, 2008) - austriamicrosystems (SWX: AMS), a leading global designer and manufacturer of high performance analog ICs for automotive, communication, industry and medical applications, expanded its automotive standard product portfolio with a family of application specific automotive System Basis Chips (SBCs) for LIN slaves.

austriamicrosystems’ AS8520 and AS8525 offer extended high voltage functions compared to conventional SBCs to increase the level of integration, thus raising module performance and reducing size for specific LIN applications. The devices were designed in the well established 0.35µm 60V High-Voltage CMOS technology for automotive and industrial products.

Besides the LIN transceiver, the AS8520 companion IC provides a 50 mA LDO, reset generator and mode select. A micro controller interface, a window watchdog, backup registers, an application specific precision resistive divider with disable for battery voltage measurement and 2 low side relay drivers are further elements of AS8520, available in a 6x6 mm QFN24 package. The device comes with a default configuration but can be factory programmed according to customers’ requirements, regarding for example 3.3V or 5V regulators, different timing options for the reset generator and window watchdog and a second voltage divider ratio. With this System Basis Chip, small LIN actuator slaves for low cost DC motor actuation utilizing various diagnosis and fail safe features can be designed in an efficient manner. Typical applications are window lifters, sun roof actuators or seat actuators but also LIN sensor slaves for battery monitoring.

austriamicrosystems’ AS8525 companion IC is dedicated to LIN bus communicated voltage and current sensing applications like intelligent battery high side or low side sensors. Beside a LIN transceiver, two 50 mA LDOs for high accuracy mixed signal units, reset generator, mode select, micro controller interface, window watchdog and backup register the device includes an application specific programmable high side current sense amplifier and a precision battery voltage attenuator with disable in a 5x5mm QFN32 package. In conjunction with austriamicrosystems’ data acquisition devices AS8510 or AS8501, an auto-offset cancellation of the entire measurement unit can be accomplished enabling high precision, very low drift, small size, low quiescent current sensor interfaces for current, voltage and temperature monitoring. The AS8525 also offers low power operating modes using an on chip oscillator/timer unit and can be factory programmed towards various requirements like the AS8520.

“These products enable system integrators to develop high performance, small size, low quiescent current sensor and actuator LIN slaves which outperform present solutions at low cost level thus increasing value for OEMs“, states Bernhard Czar, Marketing Director Automotive at austriamicrosystems.
Furthermore, qualified IP from current product families enables device derivatives on fast development cycles for specific customer demands. Visit austriamicrosystems and get to know more about our comprehensive analog IC portfolio at booth 124 at the Convergence 2008, Cobo Center, 2008/10/20 - 2008/10/22 Detroit, Michigan.

About austriamicrosystems
austriamicrosystems is a leading designer and manufacturer of high performance analog ICs, combining more than 25 years of analog design capabilities and system know-how with its own state-of-the-art manufacturing and test facilities. austriamicrosystems leverages its expertise in low power and high accuracy to provide industry-leading customized and standard analog products. Operating worldwide with more than 1,000 employees, austriamicrosystems focuses on the areas of power management, sensors & sensor interfaces and mobile entertainment in its markets Communications, Industry & Medical and Automotive, complemented by its Full Service Foundry activities. austriamicrosystems is listed on the SWX Swiss Exchange in Zurich (ticker: AMS).


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