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Hall-effect sensors tipped for auto, mechatronic apps

Posted: 21 Feb 2008 ?? ?Print Version ?Bookmark and Share

Keywords:Hall-effect sensors? MCU? temperature sensor? advanced on-chip compensation? digital interface?

Micronas GmbH has announced a new series of Hall-effect sensors that integrate an MCU, temperature sensor, advanced on-chip compensation and a digital interface. The company said these sensors are specifically optimized for automotive and mechatronic applications.

With the programmable on-chip MCU, HAL 28xy devices are flexible and capable of providing diagnostics for additional reliability and ease of service. The digital interface reduces component and wiring costs, making the sensors cost-effective for applications such as seat-track position and fuel-level sensing.

The Hall-effect sensor and on-chip temperature sensor each has its own ADC. This lets the MCU perform spinning-current offset compensation, plus first-order temperature compensation for Hall offset error and second-order temperature compensation for overall Hall-effect sensitivity. The on-chip EEPROM makes it possible to store custom individualized application parameters in each device.

The implemented bus interface can drive the serial bus directly because the bus-driver is fully integrated. Both the power supply and the serial bus connections are protected by over-voltage devices.

All HAL 28xy family members are offered in a TO-92UT package rated for use from -40C to 140C.

- Ismini Scouras

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