Micronas霍尔效应传感器为汽车和工业应用提供具有成本效益的可编程性能

2008年10月17日09:54:40 本网站我要评论(2)字号：T | T | T

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Micronas (SWX Swiss Exchange: MASN), a leading supplier of innovative application-specific IC system solutions for automotive and consumer electronics, today announced the HAL(R) 880 programmable linear Hall-effect sensor. The HAL 880 is complementing Micronas?family of programmable linear Hall sensors HAL 8xy. It uses digital technology to deliver superior sensor performance while offering a linear analog output for compatibility with existing sensor designs. Based on building blocks proven in earlier Micronas Hall-effect sensors, it allows system designers to reuse acquired know-how from previous designs with the HAL 8xy family and adopting this experience to their new designs. Thus, system designers can build custom-calibrated sensor assemblies at low costs.

Modern automobiles deploy dozens of Hall-effect sensors. A sensor that can be custom-programmed in system is more accurate. The HAL 880 can deliver the precision and accuracy for applications such as pedal position sensing. It is also well suited for headlight-adjustment systems and other applications requiring linear or angular position sensing but also for current sensing applications.

With a junction temperature range of -40 to +140 C, it is rugged enough for industrial as well as automotive applications. Hall-effect sensors are becoming more common in factory automation and consumer white-goods. In the latter, accurate sensors contribute to increased energy efficiency in washing machines, dryers, and other large appliances.

The device uses a DSP to perform sensor linearization and can compensate for the variations in the Hall effect due to operating temperature, magnetic field strength, magnet temperature, Hall-plate sensitivity, and offset voltage. Its output is a fully push-pull 12-bit ratiometric analog output with less than 25 mV of noise. Wire-break detection is featured to insure reliable sensing. All programming parameters are kept in the internal EEPROM, and there are 13 extra bits for customer or application data. The device is supported by the full range of PC-based Hall-effect sensor development tools from Micronas.

Pin-compatible to the other members of the HAL 8xy family, the HAL 880 is packaged in the industry standard small TO92UT package. No extra pin is required for programming, which is done by modulating the current on the supply pin.

Micronas霍尔效应传感器为汽车和工业应用提供具有成本效益的可编程性能

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