HAL320 Datasheet, PDF (7/13 Pages) List of Unclassifed Manufacturers – Differential Hall Effect Sensor IC

HAL320
Magnetic Characteristics at T_J = –40 °C to +170 °C, V_DD = 4.5 V to 24 V
Typical Characteristics for V_DD = 12 V
Magnetic flux density values of switching points (Condition: –10 mT < B₀ < 10 mT)
Positive flux density values refer to the magnetic south pole at the branded side ot the package. ∆B = B_S1 – B_S2
Parameter
–40 °C
Min. Typ. Max.
Min.
25 °C
Typ. Max.
100 °C
Min. Typ. Max.
170 °C
Unit
Min. Typ. Max.
On point ∆B_ON
∆B > ∆B_ON
–1.5
1.2 2.5
Off point ∆B_OFF
∆B < ∆B_OFF
–2.5 –0.6 1.5
Hysteresis
1
∆B_HYS = ∆B_ON – ∆B_OFF
1.8
4
Offset ∆B_OFFSET =
–2
0.3
2
(∆B_ON + ∆B_OFF)/2
-1.5
1.2
–2.5 –0.6
1
1.8
–2
0.3
2.5 –2
1.2
1.5 –3
–0.5
4
1
1.7
2
–2.5
0.4
3
–2.5 1.1
2
–3.5 –0.4
4
0.8
1.5
2.5 –3
0.4
3.5 mT
2.5 mT
4
mT
3
mT
In back-biased applications, sensitivity mismatch between the two Hall plates S₁ and S₂ can lead to an additional offset
of the magnetic switching points. In back-biased applications with the magnetic preinduction B₀, this sensitivity mis-
match generates the magnetic offset ∆B_OFFSETbb = |S₁ – S₂|/S₁ @ B₀ + ∆B_OFFSET.
Parameter
–40 °C 25 °C 100 °C 170 °C Unit
Sensitivity mismatch¹⁾
|S₁ – S₂|/S₁
1.5²⁾
1.0²⁾
1.0²⁾
0.5²⁾
%
1) _{Mechanical stress from packaging can influence sensitivity mismatch.}
2) _{All values are typical values.}
The magnetic switching points are checked at room temperature at a magnetic preinduction of B₀ = 150 mT.
These magnetic parameters may change under external pressure and during the lifetime of the sensor.
Parameter
On point ∆B_ONbb
Off point ∆B_OFFbb
Hysteresis ∆B_HYS
Offset ∆B_OFFSETbb
Min.
25 °C
Typ.
Unit
Max.
–4.5
1.5
5.5 mT
–5.5 –0.3
4.5 mT
1
1.8
4
mT
–5
0.6 +5
mT
V_OH
Output Voltage
5.0
2.0
V_OL
DB_{OFF min}
DB_OFF 0 DB_ON
DB_{ON max}
DB_HYS
DB = B_S1 – B_S2
Fig. 7: Definition of switching points and hysteresis
Micronas
2.0
1.0
Fig. 8: Recommended pad size for SOT-89A and
SOT-89B; Dimensions in mm
7