PRODUCT INFORMATION
HAL 1821/1822/1823
July/2009
HAL
®
1821/1822/1823
Linear Hall-Effect Sensor Family
The HAL 1821/1822/1823 are new mem-
bers of the linear Hall-effect sensor family
HAL 182x, offering excellent performance/
price trade-off. They are universal magnetic
field sensors with a ratiometric, linear ana-
log output. The members of the sensor fam-
ily can be used for magnetic field measure-
ments,
current
measurements
and
detection of any mechanical movement.
Very accurate angle measurements or dis-
tance measurements can also be carried
out. The sensors are very robust and can
be used in harsh electrical and mechanical
environments.
The output voltage is proportional to the
magnetic flux density through the Hall plate.
The choppered offset compensation leads
to stable magnetic characteristics over sup-
ply voltage and temperature.
The different family members vary by
sensitivity (25 mV/mT, 31.25 mV/mT and
50 mV/mT). The quiescent output voltage
(offset) for all family members is 50% of the
supply voltage.
The sensors are designed for industrial and
automotive applications and operate in the
junction temperature range from –40 °C up
to 170 °C.
They are available in the very small leaded
package TO92UA and in the small SMD
package SOT89B.
Major Applications
V
Features
V
V
V
V
V
V
V
V
V
V
V
V
V
Linear Hall-effect sensor with ratiometric
analog output
Temperature and stress stable quiescent
output voltage
Very accurate sensitivity and offset
Customized versions possible
On-chip temperature compensation
Active offset compensation
Operates from –40 °C up to 170 °C junc-
tion temperature
Operates from 4.5 V up to 5.5 V supply
voltage
Operates with static magnetic fields and
dynamic magnetic fields up to 1 kHz
Overvoltage and reverse-voltage protec-
tion on V
DD
pin
Magnetic characteristics are extremely
robust against mechanical stress.
Short-circuit protected push-pull output
EMC and ESD optimized design
Due to the sensor’s versatile program-
ming characteristics and its high accu-
racy, the HAL 1821/1822/1823 is the
optimal system solution for applications
such as:
–
–
–
–
–
Linear position measurements
Angle sensors
Distance measurements
Current measurements
Magnetic field measurements
Family Overview
Type
1821
1822
1823
Offset
50% of V
DD
50% of V
DD
50% of V
DD
Sensitivity
50 mV/mT
31.25 mV/mT
25 mV/mT
MICRONAS [ MICRONAS ]
