Accurate position sensing with unidirectional linear Hall IC
The accuracy of this factory-programmed device is enhanced via end-of-line programming of the temperature coefficient to optimise both sensitivity and quiescent voltage output across the full operating temperature range. ALS3100 is a ratiometric Hall-effect sensor IC which provides a voltage output proportional to the applied magnetic field. The quiescent voltage output is adjusted to around 0.7V and the output sensitivity is set to 2.4 mV/G.
Each BiCMOS monolithic circuit integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a dynamic offset cancellation technique. The features of this linear device suit it to use in automotive and industrial applications requiring high accuracy and operation across an extended temperature range from -40°C to +150°C.
The device comes in LH package style: a SOT-23W style, miniature, low-profile package for surface-mount applications.
Allegro MicroSystems; www.allegromicro.com
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
