|Programmable Hall-Effect Sensor Family for Rotational or Linear Position Detection based on 3D HAL® Technology
The HAL 37xy family is the second sensor generation using Micronas' proprietary 3D HAL technology, which offers a further improvement of the angular performance. Compared to the first generation, a 30% lower angular error has been achieved.
Operation with magnetic fields down to ±20 mT is enabled thanks to the improved technology. HAL 3715 and HAL 372x provide a linear, ratiometric analog output signal with integrated wire-break detection working with pull-up or pull-down resistors. HAL 373x features digital output formats such as PWM and SENT SAEJ2716 rev. 2010. The digital output format is customer programmable.
The sensors can measure three magnetic field components BX, BY, and BZ. This enables a set of potential applications for position detection, such as wide distance, angle or through-shaft angular measurements. On-chip signal processing calculates the angle out of two of the magnetic field components and converts this value into an output signal. The sensor exhibits excellent drift performance over the specified The sensors can measure three magnetic field components BX, BY, and BZ. This enables a set of potential applications for position detection, such as wide distance, angle or through-shaft angular measurements. On-chip signal processing calculates the angle out of two of the magnetic field components and converts this value into an output signal. The sensor exhibits excellent drift performance over the specified temperature range resulting in a new class of accuracy for angular or linear measurements. The sensor features an arbitrarily programmable stepwise linear characteristic for linearization of the output signal. Major characteristics can be adjusted to the magnetic circuit by programming the non-volatile memory.
The sensors contain advanced on-board diagnostic features that enhance fail-safe detection. The devices are designed for automotive and industrial applications and operate in the junction temperature range from −40 ºC up to 170 ºC. The sensors are available in a very small four-pin leaded transistor package TO92UP, as well as in a SOIC8 package.
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