hal 37xy may/2014 product information hal ? 37xy second-generation 3d hal ? sensor family with superior angular accuracy 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 pro- vide a linear, ratiometric analog output sig- nal 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 b x , b y , and b z . this enables a set of potential applications for position detection, such as wide distance, angle or through-shaft angular measure- ments. on-chip signal processing calcu- lates 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 measure- ments. the sensor features an arbitrarily programmable stepwise linear characteris- tic 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 c up to 170 c. the sensors are available in a very small four-pin leaded transistor package to92up, as well as in a soic8 package. features measurement extremely robust against temperature and stress influences operating with magnetic field amplitudes down to ? 20 mt with an angular accu- racy of ? 0.5% fs (digital output, x-y hall plates) 12 bit ratiometric linear analog output for hal 372x modulo 90/120 output for hal 3715 0.2 khz to 2 khz pwm (up to 12 bit) or 12 bit sent output for hal 373x programmable arbitrary output charac- teristic with up to 33 setpoints operates from v sup = 4.5 v up to 5.5 v operates from t j = ? 40 c up to 170 c programming via the sensor?s output pin programmable characteristics in eeprom with redundancy and lock function 2 nd -order temperature-dependent offset programmable for x/y- or z-channel on-chip diagnostics short-circuit protected push-pull output over-/reverse-voltage protection at vsup under- and overvoltage detection of vsup wire-break detection with pull-up and pull-down resistors
product information hal 37xy may/2014 all information and data contained in this product inform ation are without any commitment, are not to be consid- ered as an offer for conclusion of a contract, nor shall t hey be construed as to create any liability. product or development sample availability and delivery are exclusively subject to our respective or der confirmation form. by this publication, micronas gmbh does no t assume responsibility for patent infringements or other rights of third parties which may result from its use. micronas gmbh ?? hans-bunte-strasse 19 ??? d-79108 freiburg (germany) ??? p.o. box 840 ??? d-79008 freiburg (germany) tel. +49-761-517-0 ??? fax +49-761-517-2174 ??? e-mail: docservice@micronas.com ??? www.micronas.com no part of this publication may be reproduced, photo- copied, stored on a retrieval system, or transmitted without the express written consent of micronas gmbh. ? edition may 15, 2014; order no. pi000149_001en major applications the new hal 37xy family is the optimal system solution for applications, such as: linear movement measurements ? (egr, clutch, transmission position) rotary position measurements ? (gear selector, motor air management) non-contact potentiometer system architecture the sensors include two vertical and one horizontal hall plate with spinning current offset compensation for the detection of x, y, or z magnetic field components, a signal processor for calculation and signal condi- tioning of two magnetic field components, protection devices, and a ratiometric linear analog, pwm, or sent output. the spinning current offset compensation minimizes the errors due to supply voltage and temperature variations or external package stress. the signal path of hal 37xy consists of two channels (ch1 and ch2). depending on the product variant, two out of the three magnetic field components are connected to channel 1 and channel 2. the sensors can be used for angle mea- surements in a range between 0 and 360 (end-of-shaft and through-shaft setup), as well as for robust position detection (linear movement or position). the in-system cali- bration can be utilized by the system designer to optimize the performance for a specific system. the calibration information is stored in the on-chip eeprom. the hal 37xy is programmable by modu- lating the output voltage. no additional pro- gramming pin is needed. fig. 1: block diagram of the hal 37xy internally temperat u re oscillator out v sup g n d eeprom memory lock control sta b ilized s u pply and protection de v ices dependent bias protection de v ices d/a temperat u re a/d sensor con v erter x/y/z hall plate a/d a/d analog o u tp u t con v erter open-circ u it, o v er v oltage, under v oltage detection digital o u tp u t dsp p w m/se n t mod u le 33 setpoints linearization x/y/z hall plate available types and behavior type output format detectable field component hal 3715 analog modulo b x and b y hal 3725 analog b x and b y hal 3726 analog b y and b z hal 3727 analog b x and b z hal 3735 pwm and sent b x and b y hal 3736 pwm and sent b y and b z hal 3737 pwm and sent b x and b z
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