Industrial Electronics

Allegro unveils industry’s smallest 3D sine/cosine position sensor

14 January 2022

Allegro MicroSystems Inc., a provider of sensing and power solutions for motion control and energy-efficient systems, has introduced its new A33230 3D sine/cosine Hall-effect position sensor integrated circuit (IC). The A33230 is the smallest 3D sine/cosine sensor currently available in the market, and offers system designers a cost-effective solution for automotive and industrial applications with a quick time to market.

The A33230 contains two discrete analog signal paths for superior high-speed performance, and the tinySource: Allegro MicroSystems Inc.Source: Allegro MicroSystems Inc. SOT23-W package size makes it ideal for situations 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 capable of performing CORDIC calculations on the two outputs.

The A33230 incorporates vertical and planar Hall-effect elements with sensing axes that are orthogonal to one another, providing 90° of phase separation, which is inherently independent of magnet pole spacing and air gap. It comes pre-programmed to measure angle in any plane (XY, XZ or YZ) while providing independent sine and cosine outputs.

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