HAL 2xy
April/2009
PRODUCT INFORMATION
HAL 2xy
Low-Cost Hall-Effect Sensor Family
PRODUCT INFORMATION
The HAL 2xy Hall switch family is produced
in CMOS technology. The sensors include a
temperature-compensated Hall plate with
active offset compensation, a comparator,
and an open-drain output transistor.
The comparator compares the actual mag-
netic flux through the Hall plate (Hall volt-
age) with the fixed reference values (switch-
ing points). Accordingly, the output
transistor is switched on or off.
The active offset compensation leads to
magnetic parameters which are robust
against mechanical stress effects. In addi-
tion, the magnetic characteristics are con-
stant in the full supply voltage and tempera-
ture range.
The sensors are designed for industrial and
automotive applications and operate with
supply voltages from 3.8 V to 24 V in the
ambient temperature range from −40 °C up
to 125 °C.
The HAL 2xy family is available in the
SOT89B SMD package and in the leaded
TO92UA package.
Features
Operates from 3.8 V to 24 V supply volt-
age
Operates with static magnetic fields and
dynamic magnetic fields up to 10 kHz
Overvoltage protection at all pins
Reverse-voltage protection at V
DD
pin
Magnetic characteristics are robust
against mechanical stress effects
Short-circuit protected open-drain out-
put by thermal shut down
Constant switching points over a wide
supply voltage and temperature range
The decrease of magnetic flux density
caused by rising temperature in the sen-
sor system is compensated by a built-in
negative temperature coefficient of the
magnetic characteristics
High temperature stability for automotive
or industrial applications
High ESD rating
Major Applications
The HAL 2xy is the optimal system solution
for applications, such as:
Endposition detection
RPM measurement of motors in various
applications, such as power window
Brushless DC motors
RPM measurements in flow meters
Replacement of micro switches
