Hall Sensors Measure Magnetic Fields Parallel To Surface

Unlike conventional Hall sensors that only respond to the field component perpendicular to the device surface, the Type CSA-1 single-axis and the Type 2SA-1 two-axis sensors respond to a magnetic field parallel to the chip surface. The integrated...
Sept. 16, 2002

Unlike conventional Hall sensors that only respond to the field component perpendicular to the device surface, the Type CSA-1 single-axis and the Type 2SA-1 two-axis sensors respond to a magnetic field parallel to the chip surface. The integrated CMOS sensor systems come complete with Hall elements, biasing circuit, amplifier, and programmable gain, offset, and temperature coefficient. The CSA-1 has a sensitivity of up to 300 mV/mT and is suited for current and remote position sensing. The 2SA-1 measures the two in-plane magnetic field components at a point with an angular error of less than 1%. For current commutation on brushless dc motors, the 2SA-11 version provides 0°, 120°, and 240° output signals. Available now, the integrated Hall sensors cost about $5 each in 1000-unit quantities.

Sentron AG
www.sentron.ch; +41 41 711 2170

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