New A33230 Hall-effect sensor is industry’s smallest, says Allegro
Claimed to be the industry’s smallest sine / cosine 3D position sensor, the A33230 has been released by Allegro Microsystems. The 3D Hall-effect position sensor IC is believed to be the smallest sine / cosine 3D sensor currently available. It is suitable for automotive and industrial applications.
The A33230 contains two discrete analogue signal paths for high-speed performance and the tiny SOT23-W package size makes it suitable for use where PCB space is at a premium. The IC can also be used as an angle sensor, provided the system includes an electronic control unit (ECU) capable of performing CORDIC calculations on the two outputs, advises Allegro Microsystems.
The A33230 incorporates vertical and planar Hall-effect elements with sensing axes that are orthogonal to one another, providing 90 degrees of phase separation, which is inherently independent of magnet pole spacing and air gap. The sensor is pre-programmed to measure angle in any plane (XY, XZ, or YZ) while providing independent sine and cosine outputs.
The ability to sense fields in the X, Y and Z planes makes Hall-effect sine / cosine sensors suitable for an extended selection of position and angle sensors in automotive and industrial applications, for example factory robotics, windshield wipers and in-cabin motors.
The A33230 is available in a five-pin SOT23-W package (suffix LH). The package is RoHS-compliant and lead (Pb)- free with a 100 per cent matt-tin leadframe plating.
