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Current Sensors Provide Precise Sensing Solutions for Automotive Applications

Tue, 01/22/2008 - 5:53am

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Low-offset Linear Hall Sensor Circuit Copper conduction Survives up to 5X over current conditions

Allegro® announces two new current sensors engineered to provide economical and precise sensing solutions for AC and DC currents in automotive applications. The ACS714 and ACS715 devices are designed and tested to meet the stringent requirements of automotive applications. Compared to their predecessors, they perform well in the more rigorous test regiment over the full automotive temperature range (㫀°C to +150°C) and exhibit greater detail in the specification for error components. The latter will allow customers to determine the total error for the given system based. The devices consist of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging.


www.allegromicro.com
508-853-5000


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