PRODUCT INFORMATION HAL 37xy May/2014 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 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 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 nonvolatile 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. ◆ 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 characteristic with up to 33 setpoints ◆ Operates from VSUP = 4.5 V up to 5.5 V ◆ Operates from TJ = 40 °C up to 170 °C ◆ Programming via the sensor’s output pin ◆ Programmable characteristics in EEPROM with redundancy and lock function ◆ 2nd-order temperature-dependent offset programmable for X/Y- or Z-channel ◆ On-chip diagnostics Features ◆ Short-circuit protected push-pull output ◆ Measurement extremely robust against temperature and stress influences ◆ Over-/reverse-voltage protection at VSUP ◆ Operating with magnetic field amplitudes down to 20 mT with an angular accuracy of 0.5% FS (digital output, X-Y Hall plates) ◆ Under- and overvoltage detection of VSUP ◆ Wire-break detection with pull-up and pull-down resistors PRODUCT INFORMATION HAL 37xy 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 May/2014 Available Types and Behavior Type Output Format Detectable Field Component HAL 3715 Analog Modulo BX and BY HAL 3725 Analog BX and BY HAL 3726 Analog BY and BZ HAL 3727 Analog BX and BZ HAL 3735 PWM and SENT BX and BY HAL 3736 PWM and SENT BY and BZ HAL 3737 PWM and SENT BX and BZ 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 conditioning 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. VSUP Internally stabilized Supply and Protection Devices 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 measurements 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 calibration 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 modulating the output voltage. No additional programming pin is needed. X/Y/Z Hall Plate Temperature Dependent Bias D/A Converter A/D DSP X/Y/Z Hall Plate Open-circuit, Overvoltage, Undervoltage Detection Oscillator 33 Setpoints Linearization A/D Protection Devices Analog Output OUT PWM/SENT Module EEPROM Memory Temperature Sensor A/D Converter Digital Output Lock Control GND Fig. 1: Block diagram of the HAL 37xy All information and data contained in this product information are without any commitment, are not to be considered as an offer for conclusion of a contract, nor shall they be construed as to create any liability. Product or development sample availability and delivery are exclusively subject to our respective order confirmation form. By this publication, Micronas GmbH does not assume responsibility for patent infringements or other rights of third parties which may result from its use. No part of this publication may be reproduced, photocopied, stored on a retrieval system, or transmitted without the express written consent of Micronas GmbH. Edition May 15, 2014; Order No. PI000149_001EN Micronas GmbH Hans-Bunte-Strasse 19D-79108 Freiburg (Germany)P.O. Box 840D-79008 Freiburg (Germany) Tel. +49-761-517-0Fax +49-761-517-2174E-mail: [email protected]www.micronas.com