1 Features and Benefits
△ Digital output
△ Stable over the entire temperature range
△ Wide operating voltage range: 4.5V ~ 24V
△ Strong resistance to mechanical stress
△ Non-contact output, safety and reliable
△ Directy drive the coils of DC motor (Fan)
△ Immunity to logic race condition
△ Short switch time and good switch sensitivity
△ TO-94 package
△ Developed according to the EU RoHS & REACH

2 Application Examples
△ Automotive electronics, Consumer electronics and Industrial electronics
△ Water flow sensing
△ Electronic steering column lock
△ Door latch system
△ Seat adjustment
△ Speed measurement and tachometer
△ Motor control
△ Brushless DC motor

AH4158 Hall Sensor is a kind of unipolar Hall switch with two complementary outputs. It is particularly suitable for double coil DC motor, double coil DC fan, speed measurement and rotation control. The sensor chip intergrated bandgap reference voltage source, Hall voltage generator, signal amplifier, hysteresis controller, reverse voltage protection diode, and circuit units such as an open-collector output driver with two complementary outputs with a sink current of 300mA. High-performance bandgap reference voltage source ensures consistent sensitivity of the sensor over a wide temperature range. Reverse voltage protection diodes avoid reverse power failures.