Sensors / Detectors / Transducers
Hall Sensors measure magnetic fields parallel to chip surface.
Press Release Summary:
Type CSA-1 single axis Hall sensor features sensitivity up to 30 mV/G and is useful for current and remote position sensing. Type 2SA-1 two-axis Hall sensor measures 2 in-plane magnetic field components at point with angular error of less than 1%. For current commutation on brushless DC motors, Model 2SA-11 provides 0, 120, and 240 deg output signals. Sensor systems include Hall elements, biasing circuit, amplifier, and programming of gain, offset and temperature coefficient.Original Press Release:
New Hall Sensor Microsystems Measure Magenetic Fields Parallel to Chip Surface
Two new types of integrated Hall sensors from Sentron AG, Zug, Switzerland, respond to a magnetic field parallel to the chip surface, unlike conventional Hall sensors which only measure the field component perpendicular to the device surface. Compared to magnetoresistive (MR) sensors, the Sentron Sensors have improved linearity, reduced hysteresis and give the positive or negative direction of the field.
Sentron's new microsystems, the Type CSA-1 single axis and the Type 2SA-1 two-axis are complete integrated CMOS sensor systems including Hall elements, biasing circuit, amplifier, and programming of gain, offset and temperature coefficient. Miniaturized applications for non-contacting sensing of electric current, mechanical position or angle are now feasible with improved price/performance ratio.
The Model CSA-1 is a single axis Hall sensor with sensitivity of up to 300mV/mT (30mV/G). The device is particularly useful for current and remote position sensing.
The Model 2SA-10 is a two-axis Hall sensor which measures the two in-plane magnetic field components at a point with an angular error of less than 1%. A rotation of a magnetic field produces phase shifted output signals. The sine and cosine output
signals are particularly useful for linear or angular position sensing. For current commutation on brushless DC motors, the Model 2SA-11 version provides 0°, 120° and 240° output signals.
Production quantities of these sensors will be available in August 2002 with unit prices of about $5.00 (quantities of 1000).
For further information please visit Sentron's web site at www.sentron.ch. GMW is the North American distributor of Sentron products.
GMW Associates
955 Industrial Road
San Carlos, CA 94070
Tel: (650) 802-8292
Email: sales@gmw.com
Web: www.gmw.com
Contacts: Brian Richter or Ian Walker
