APX9140 Datasheet, PDF (3/7 Pages) Anpec Electronics Coropration – Hall Effect Sensor IC

APX9140
Magnetic Characteristics T_A = 25°C, V_DD=14V unless otherwise noted
Rank
A
B
D
Maximum Operate Point
Bop
+70
+100
+150
Maximum Release Point
Brp
-70
-100
-150
Unit
Gauss
Notes : For 5cm and below DC fan application, grade A device is recommended to avoid magnetic
sensitivity problem. For above 5cm DC fan application, grade B device is acceptable for most cases.
Test Information
APX9140
Signal Generator
12 34
V_DD
R_L2
R_L1
C_L2
C_L1
Scope
Figure 1 : Switching Circuit for Output Rise Time and Fall Time Measurement
Application Circuit
+B
-B
1 234
L1
L2
APX9140
D1
V_DD
C1
Figure 2 Typical DC brushless fan application circuit
Note: Add diode(D1) for reverse voltage protection and add capacitor (C1) to eliminate
high voltage spike into Hall IC.
Copyright  ANPEC Electronics Corp.
3
Rev. A.6 - Jul., 2002
www.anpec.com.tw