HAL3625

PRODUCT INFORMATION HAL 3625 Sept/2009 HAL® 3625 Programmable Direct Angle Sensor The HAL 36xy family is a new generation of Hall-effect sensors. Due to its advanced vertical Hall-plate technology it enables the possibility to measure magnetic fields in the chip plane. With this technology it is possible to directly measure rotation angles in a range of 0° to 360° with simple magnetic arrangements. The first member of this family is the HAL 3625. Two on-chip vertical Hall plates measure both magnetic field components BX and BY. The direct angle information is internally calculated by the sensor using the inverse tangent function and converted into an analog output voltage. Due to the measurement method, the sensor provides an excellent drift performance over temperature and therefore a new class of accuracy. The sensor provides a linear, ratiometric analog output signal with implemented wirebreak detection working with a pull-up or pull-down resistor. Major characteristics like gain and offset of X- and Y-channel, zero-angle position, phase shift between X- and Y-channel, output slope and offset and clamping levels can be adjusted to the magnetic circuit by programming the non-volatile memory. The HAL 3625 is available in the very small SOIC8 SMD package. V V V V V V V V V V V X- and Y-channel gain and offset of signal path programmable Phase shift between X- and Y-channel programmable Programmable output clamping voltages for error band definition Programmable magnet lost detection 32 bit identification number for customer Operates from –40 °C up to 170 °C junction temperature Operates from 4.5 V up to 5.5 V supply voltage Short-circuit protected push-pull output Over- and reverse-voltage protection at VDD pin On-board diagnostic functions Main Features V V V V V V V V V V V V Angular accuracy of ±1.0° for 360° angle range Angle measurement is extremely is robust against temperature and stress influence Ratiometric linear analog output is proportional to the measured angle Integral non-linearity error of output signal ±0.1% of VDD Ratiometric error of output signal ±0.2% Output response time 1 ms (slow mode) Low output noise of 0.2° rms Wire-break detection with pull-up or pulldown resistor Over- and undervoltage detection Programmable characteristics in a nonvolatile memory with redundancy and lock function Programming of the sensor via its output with TTL level Programmable output slope and offset Applications Due to the sensor’s versatile programming characteristics and its high accuracy, the HAL 3625 is the optimal system solution for applications such as: – Contactless potentiometers – Rotary position measurement PRODUCT INFORMATION HAL 3625 Development Tools Sept/2009 V For engineering and production purposes, Micronas offers an easy-to-use application kit: – Micronas programmer board (HAL-APB V 1.3) – LabVIEWTM programming software for Windows® 9x/2000/XP/Vista – LabVIEW VIs Serial Port HAL Programmer Board Fig. 1: Development tool setup System Architecture The HAL 3625 sensor is produced in a proven submicron CMOS technology. The HAL 3625 features temperature-compensated Hall plates with choppered offset compensation, two A/D converters for the magnetic field information, a temperature sensor with A/D converter, digital signal processing, a push-pull output, an EEPROM memory with redundancy and lock function for the calibration data and the data register information, a serial interface for programming the EEPROM, and protection devices on all pins. The HAL 3625 is programmable by modulating the output voltage. No additional programming pin is needed. The internal digital signal processing is of great benefit because analog offsets, temperature shifts, and mechanical stress do not degrade the sensor accuracy. VSUP Internally stabilized Supply and Protection Devices Temperature Dependent Bias Oscillator Open-circuit, Overvoltage, Undervoltage Detection Protection Devices X-Hall Plate Y-Hall Plate A/D DSP A/D D/A Converter Analog Output OUT EEPROM Memory Temperature Sensor A/D Converter Lock Control GND Digital Output Fig. 2: Block diagram of the HAL 3625 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 Sept, 9, 2009; Order No. PI000130_002EN 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