PRODUCT INFORMATION
HAL 5xy
Available Types and Switching Behavior
Sept/2006
Features
Switching
Behavior
HAL 501
bipolar
HAL 502
latching
HAL 503
latching
HAL 504
unipolar
HAL 505
latching
HAL 506
unipolar
HAL 508
unipolar
HAL 509
unipolar
HAL 516
unipolar
with
inverted
output
HAL 519
unipolar
with
inverted
output
(north
polarity)
high
HAL 523
unipolar
Sensitivity
very high
high
medium
medium
low
high
medium
low
high
low
System Architecture
The HAL 5xy sensors are monolithic inte-
grated circuits which switch in response to
magnetic fields. If a magnetic field with flux
lines perpendicular to the sensitive area is
applied to the sensor, the biased Hall plate
forces a Hall voltage proportional to this
field. The Hall voltage is compared with the
actual threshold level in the comparator.
The temperature-dependent bias increases
the supply voltage of the Hall plates and
adjusts the switching points to the decreas-
ing induction of magnets at higher tempera-
tures. If the magnetic field exceeds the
threshold levels, the open drain output
switches to the appropriate state. The built-
in hysteresis eliminates oscillation and pro-
vides switching behavior of the output with-
out bouncing.
HAL 5xy
V
DD
1
Reverse
Voltage &
Overvoltage
Protection
Temperature
Dependent
Bias
Hysteresis
Control
Short Circuit &
Overvoltage
Protection
Hall Plate
Switch
Comparator
Output
OUT
3
Clock
GND
2
Fig. 1:
Block diagram of the HAL 5xy
All information and data contained in this product information are without any commitment, are not to be consid-
ered 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, photo-
copied, stored on a retrieval system, or transmitted
without the express written consent of Micronas GmbH.
Edition Sept. 26, 2006; Order No. 6251-712-1PI
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
MICRONAS [ MICRONAS ]
