OH137A0 Bipolar hall IC

Part No: OH137A0

Function: Bipolar

Operating voltage: 4.5-24V

Output Current: 25mA

Operating Point (Bop): <10mT

Release Point(Brp): >-10mT

Operating Temp: -20~ 85℃

Package: TO92S


OH137A0 bipolar hall IC is a switched Hall-Effect IC suitable for contactless switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output.


  • 4.5V to 24V DC operation voltage
  • Open-Collector pre-driver
  • 25mA maximum sinking output current.
  • Reverse Polarity Protection


  • Position detection
  • Flow measurement

Absolute Maximum Ratings (TA=25℃)

Supply Voltage VCC··············4.5-24V              Operating Temperature Range TA ·············-40~85℃

Output Current IO···················20mA                  Storage Temperature RangeTS ················-55~150℃


Electrical Characteristics (Ta= 25°C )

Parameter Symbol Conditions Value Unit
Min Typ Max
Supply Voltage VCC 4.5 24 V
Output Saturation Voltage VOL Vcc=4.5V, RL=2KΩ,B≥BOP 200 400 mV
Output Leakage Current IOH Vout=Vccmax,B≤BRP 1.0 10 μA
Supply Current ICC VCC=Vccmax OC output 3 5 mA
Output Rise Time tr Vcc=12V, RL=820Ω, CL=20pF 0.12 1.20 μS
Output Falling Time tf 0.14 1.40 μS


Magnetic Characteristics (Ta= 25°C ) (1mT = 10 Gauss)

Parameter symbol Value Unit
Min Typ Max
Operate Point BOP 5 10 mT
Release Point BRP -1 4 mT
Hysteresis BH 6 mT

Datasheet (PDF) : OH137A0 Bipolar hall IC