PRODUCT INFORMATION
HAL 710/730
May/2007
HAL
®
710/730
Hall-Effect Sensors with Direction Detection
The HAL 710/730 Hall switch family is pro-
duced in CMOS technology. The sensors
include two independent temperature-com-
pensated Hall plates each equipped with
active offset compensation and a compara-
tor. The sensors provide two open-drain
outputs – one for “count” and one for “direc-
tion” detection.
The comparator compares the actual mag-
netic flux through the Hall plates (Hall volt-
age) with the fixed reference values (switch-
ing points). The first comparator directly
switches the count output. The phase shift
between both comparators determine the
state of the direction output.
The active offset compensation leads to
magnetic parameters which are robust
against mechanical stress effects. In addi-
tion, the magnetic characteristics are con-
stant over the full supply voltage and tem-
perature 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 710/730 family is available in the
SMD package SOT-89B-3.
Features
◆
Operates from 3.8 V to 24 V supply volt-
age
◆
Generation of a direction signal
◆
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-
puts 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 automo-
tive or industrial applications
◆
High ESD rating
Major Applications
The HAL 710/730 is the optimal system
solution for applications, such as:
◆
Endposition detection
◆
RPM measurement of motors in various
applications, such as power window
◆
RPM measurements in flow meters
◆
Replacement of micro switches
MICRONAS [ MICRONAS ]
