View HAL85X_4650386.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

PRODUCT INFORMATION
HAL 85x
Oct/2002
HAL 85x Programmable Hall-Effect Sensors with Arbitrary Output
The HAL 85x complement the existing Halleffect sensor family HAL 8xx. Both universal magnetic field sensors provide an arbitrary output signal. The sensors are produced in submicron CMOS technology. In combination with a rotating or moving magnet, the sensors can be employed for angle, distance, and level measurements. The sensors provide either a pulse width modulated (PWM) output signal or a serial Biphase-M output. Major characteristics like magnetic field range, output characteristic, output format, sensitivity, shift (duty cycle of the PWM output signal or the serial output word), PWM period, low and high current, and the temperature coefficients can easily be adjusted to the magnetic circuit (linear and quadratic) by programming the non-volatile memory. The output characteristic can be set with 32 setpoints with a resolution of 9 bit The sensors were designed to translate a linear magnetic field into an arbitrary output signal or a non-linear magnetic field into a linear output signal. The sensors are available in the very small leaded package TO-92UT.
Features
High-precision linear Hall effect sensors with different output formats Various programmable magnetic characteristics with non-volatile memory Programmable output characteristic (32 setpoints with 9 bit resolution) Programmable output formats (PWM or serial Biphase-M) Programmable PWM Period Open-drain output for HAL 855 Programmable output current source for HAL 856 (low and high current) Digital signal processing Temperature characteristics programmable for matching all common magnetic materials Programming by modulation of the supply voltage Lock function and built-in redundancy for EEPROM memory Operates from -40 C up to 150 C ambient temperature
Operates from 4.5 V up to 18 V supply voltage Operates with static magnetic fields and dynamic magnetic fields up to 2 kHz Choppered offset compensation Overvoltage protection on all pins Reverse-voltage protection on VDD pins Magnetic characteristics extremely robust against mechanical stress Short-circuit protected output EMC-optimized design
Major Applications
Due to the sensor's versatile programming characteristics, the HAL 85x is the optimal system solution for applications such as: Contactless potentiometers Rotary position measurement Level measurement Linear position detection Magnetic field detection
PRODUCT INFORMATION
HAL 85x
Development Tools
Programming of the EEPROM memory and calculation of the individual sensor characteristics can easily be done with a PC and the application kit from Micronas: Micronas programmer board (hardware version 5.x) Visual Basic programming software for Windows 9x/2000/NT/ME Visual Basic source code
HAL Programmer Board Serial Port
Oct/2002
Fig. 1: Development tool setup
System Architecture
The HAL 85x sensors are produced in a proven automotive submicron CMOS technology. The HAL 85x features a temperature-compensated Hall plate with choppered offset compensation, an A/D converter, digital signal processing, an open-drain output or output current source, an EEPROM memory with redundancy and lock function for the calibration data and the output characteristic, a serial interface for programming the EEPROM, and protection devices on all pins The HAL 85x is programmable by modulating the supply voltage. No additional programming pin is needed.
GND
VDD
Bandgap Reference
Temperature Dependent Bias
Oscillator
Switched Hall Plate
A/D Converter
Digital Signal Processing
Open-Drain Output
OUT
Supply Level Detection
Lock Control
EEPROM Memory
The internal digital signal processing is a great benefit because analog offsets, temperature shifts, and mechanical stress do not degrade the sensor accuracy.
Fig. 2: Block diagram of the HAL 855
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 Oct. 1, 2002; Order No. 6251-604-1PI
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

▲Up To Search▲

Price & Availability of HAL85X

	To Download HAL85X Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .