AH174 is a single-digital-output Hall-effect sensor for high temperature operation. It features 3.5V-20V operation voltage, 25mA output current, and overcurrent protection. It is suitable for rotor position sensing, current switch, encoder, and RPM detection applications.
The AH174 Hall‑effect latch sensor is designed for high‑temperature applications such as rotor position sensing, current switching, encoder feedback, and RPM detection. It features a bipolar Hall sensor, open‑collector pre‑driver, and built‑in bandgap regulator for stable operation from –40 °C to +125 °C.
The device is offered in SIP‑3L and SOT23‑3L packages, with detailed electrical and magnetic characteristics provided for design integration. Ordering codes, marking information, and mechanical dimensions are included for proper part selection.
| Supply voltage range | 3.5 V – 20 V |
|---|---|
| Output off voltage (max) | 20 V |
| Output sink current | 25 mA |
| Operating temperature range | -40 °C – +125 °C |
| Storage temperature range | -65 °C – +150 °C |
| Power dissipation (SOT23‑3) | 230 mW |
| Output saturation voltage | 300 – 400 mV |
| Supply current (VCC=12 V, OUT OFF) | 3.5 – 6 mA |
| Operate point Bop (grade A) | 15 – 60 Gauss |
| Release point Brp (grade A) | -60 – -15 Gauss |
| Hysteresis Bhy (grade A) | 80 Gauss |
The sensor operates from –40 °C up to +125 °C.
It can sink up to 25 mA on the output.
The device is offered in SIP‑3L and SOT23‑3L packages.
The sensor can be powered from 3.5 V to 20 V.