HAL115 Datasheet, PDF (3/9 Pages) Micronas – Hall Effect Sensor IC

HAL115
Functional Description
This Hall effect sensor is a monolithic integrated circuit
that switches in response to magnetic fields. If a
magnetic field with flux lines at right angles 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 decreasing induction
of magnets at higher temperatures. If the magnetic field
exceeds the threshold levels, the open drain output
switches to the appropriate state. The built-in hysteresis
eliminates oscillation and provides switching behavior of
output without bounce. The output is short-circuit
protected by limiting high currents and by sensing ex-
cess temperature. Shunt protection devices clamp
voltage peaks at the Output-Pin and V_DD-Pin together
with external series resistors. Reverse current is limited
at the V_DD-Pin by an internal series resistor up to –15 V.
No external reverse protection diode is needed at the
V_DD-Pin for values ranging from 0 V to –15 V.
Outline Dimensions
0.1 ^+0.05
0.7
4.5 ^+0.1
2.25
1.7
2
0.95
3.1 ^+0.2
4.0 ±0.25
1.5 ^+0.1
2.5 ^+0.1
0.4 ¹
2
0.4
1.5
3.0
3 _0.4
sensitive area
position of hall sensor
referenced to the
center of package
x = 0 ± 0.1 mm
y = 0.3 ± 0.1 mm
(0.4 mm x 0.2 mm)
top view
branded side
10°
max. 0.05 _–0.05
10°
Fig. 3:
Plastic Small Outline Transistor Package
(SOT-89A)
Weight approximately 0.04 g
Dimensions in mm
V_DD
1
Reverse
Voltage &
Overvoltage
Protection
HAL 115
Temperature
Dependent
Bias
Hysteresis
Control
Short Circuit &
Overvoltage
Protection
Hall Plate
GND
2
Comparator
Output
OUT
3
Fig. 2: HAL115 block diagram
1.5^+0.1
0.3
4.06^+0.1
2.03
1.0
3^+0.1
sensitive area
position of hall sensor
referenced to the
center of package
x = 0 ± 0.1 mm
y = 0.5 ± 0.1 mm
(0.4 mm x 0.2 mm)
123
12.7
0.36
min.
0.4
1.27 1.27
2.54
branded side
45°
0.8
Fig. 4:
Plastic Transistor Single Outline Package
(TO-92UA)
Weight approximately 0.12 g
Dimensions in mm
MICRONAS INTERMETALL
3