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AH372 (Not Recommended for new design)

NRND = Not Recommended for New Design

High Temperature High Sensitivity Hall Effect Latch

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AH372 is a single-digital-output Hall-Effect latch sensor with internal pull-up resistor for high temperature operation. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify Hall voltage, and a comparator to provide switching hysteresis for noise rejection, and an output driver with a pull-up resistor. An internal band-gap regulator provides a temperature compensated supply voltage for internal circuits and allows a wide operating supply range.

When the magnetic flux density (B) perpendicular to the package is larger than operation point (BOP), output is switched on (OUT pin is pulled low). The output state is held on until a magnetic flux density reversal falls below BRP. When B is less than BRP, the output is switched off.

The AH372 is available in SIP-3 (Ammo Pack), SIP-3 (Bulk Pack), SC59 and SOT23 packages.


  • Bipolar Hall Effect Latch Operation
  • 2.2V to 20V Operating Range
  • Single Output with Built-in Pull-up Resistor
  • 25mA output Sink Capability
  • -40°C to +125°C Operating Temperature
  • Industry Standard SIP-3, SC59 and SOT23 Packages
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device


  • Rotor Position Sensing for Motor Commutation
  • Encoder
  • Speed Measurement – RPM Monitor
  • Contact-less Current Switch

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) No
Average Supply Current (µA) 2
Operating Ambient Temperature (°C) -40 to 125
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Max) 60
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Min) 5
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Typ) 30
Operating Voltage (V) 2.2 to 20
Output Current Capability (mA) 25
Output Type Single, Internal Pull-Up Resistor, Active Low
AEC Qualified No
Release Point Brp (Brps +ve/Brpn -ve) Gauss (Max) 5
Release Point Brp (Brps +ve/Brpn -ve) Gauss (Min) 60
Release Point Brp (Brps +ve/Brpn -ve) Gauss (Typ) 30

Technical Documents

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site