PRODUCT INFORMATION HAL 2830 May/2008 HAL® 2830 Linear Hall-Effect Sensor with SENT Output The HAL 2830 is a new member of the Micronas varioHAL (HAL 28xy) family of programmable linear Hall-effect sensors. The HAL 2830 is available in the very small leaded package TO-92UT. Features It features a digital SENT interface (SingleEdgeNibbleTransmission) that enables a fast and robust data transfer in harsh automotive environments. The implementation of the interface complies with the SAE J2716 SENT standard. Each message consists of a sequence of pulses. In one protocol, the sensor transmits the magnetic field information, a status information of the sensor, and for safety reasons a CRC checksum. The HAL 2830 features a Hall-plate with spinning current offset compensation technique and a precise temperature sensor which is used for temperature compensation of both the Hall-sensors sensitivity and offset. The sensor provides digital signal processing. This is of great benefit because analog offsets, temperature shifts, and mechanical stress do not degrade digital signals. Major characteristics like magnetic field range, sensitivity, offset, and the temperature coefficients of sensitivity and offset can easily be adjusted to the magnetic circuit by programming the non-volatile memory. V V V V V V V V V V V V V High-precision linear Hall-effect sensor Spinning-current offset compensation Built-in temperature sensor On-board diagnostics (overtemperature, overcurrent, etc.) Customer-programmable temperature compensation of output sensitivity (2nd order) and output offset (1st order) Operating junction temperature range: −40 °C… 170 °C. Magnetic characteristics extremely robust against mechanical stress V V V V V V V V SENT output according to SAE J2716 standard V Message tick time customer-programmable between 2 µs and 17 µs V V Three data nibbles for magnetic field information 12-bit resolution Non-volatile EEPROM with redundancy and lock function Open-drain output with slew rate control Transmission of temperature information Individual serial number for each sensor 12-bit customer serial number Due to the sensor’s versatile programming characteristics and low drifts, the HAL 2830 is the optimal system solution for applications such as: V V Low time customer-programmable between 3 and 7 clock ticks Telegram length less than 360 µs at 2 µs tick time Major Applications Sampling rates up to 2 kHz with internal low-pass filter Digital signal processing Sample accurate transmission Contactless potentiometers Angular measurements (e.g. valve, throttle, pedal position) Linear movement (e.g. seat track position) Linear force or torque measurements Current sensing (e.g. battery management) PRODUCT INFORMATION HAL 2830 May/2008 Development Tools For engineering and production purposes, Micronas offers an easy-to-use application kit: V V V Micronas programmer board (HAL-APB V 1.3) LabVIEWTM programming software for Windows® 9x/2000/XP/Vista Serial Port LabVIEW VIs HAL Programmer Board Fig. 1: Development tool setup System Architecture The HAL 2830 sensors are produced in a proven automotive submicron CMOS technology. The HAL 2830 features a temperature-compensated Hall plate with spinning-current offset compensation, an A/D converter for the Hall-plate, an A/D converter for the temperature sensor, digital signal processing (RISC processor), a digital SENT interface, an EEPROM memory with redundancy and lock function for the calibration data and the SENT output configuration, and protection devices on all pins. The HAL 2830 is programmable by means of BiPhase-M telegrams. No additional programming pin is needed. The sensor is programmed through its output pin. VSUP Internally stabilized Supply and Protection Devices Temperature Dependent Bias Oscillator Switched Hall Plate A/D Converter Digital Signal Processing Temperature Sensor A/D Converter Protection Devices SENT Molule Open-Drain output with slew rate control DIO EEPROM Memory Lock Control GND Fig. 2: Block diagram of the HAL 2830 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 2, 2008; Order No. PI000124_001EN 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: [email protected] ⋅ www.micronas.com