Micronas HAL3625 Programmable direct angle sensor Datasheet

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.
Main Features
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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)
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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
Low output noise of 0.2° rms
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Wire-break detection with pull-up or pulldown resistor
Applications
Over- and undervoltage detection
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On-board diagnostic functions
Programmable characteristics in a nonvolatile memory with redundancy and
lock function
Due to the sensor’s versatile programming characteristics and its high accuracy, the HAL 3625 is the optimal system
solution for applications such as:
Programming of the sensor via its output
with TTL level
– Contactless potentiometers
– Rotary position measurement
Programmable output slope and offset
PRODUCT INFORMATION
HAL 3625
Sept/2009
Development Tools
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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.
VSUP
Internally
stabilized
Supply and
Protection
Devices
X-Hall
Plate
Temperature
Dependent
Bias
Open-circuit,
Overvoltage,
Undervoltage
Detection
Oscillator
A/D
D/A
Converter
DSP
Y-Hall
Plate
Protection
Devices
OUT
Analog
Output
A/D
EEPROM Memory
The HAL 3625 is programmable by modulating the output voltage. No additional programming pin is needed.
Temperature
Sensor
A/D
Converter
Digital
Output
Lock Control
GND
The internal digital signal processing is of
great benefit because analog offsets, temperature shifts, and mechanical stress do
not degrade the sensor accuracy.
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: [email protected] ⋅ www.micronas.com
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