AH171x High-Sensitivity Hall Effect Latch Switches Diodes Incorporated AH171x High-Sensitivity Hall Effect Latch Switches are designed for brushless DC-motor commutation speed measurement, angular or linear encoders, and position sensors in industrial applications. The AH171x is optimized to operate at 2.4V to 5.5V to support a wide range of demanding applications. The AH171x switches feature chopper-stabilized architecture and an internal bandgap regulator to allow temperature-compensated supply for internal circuits providing a reliable solution over the whole operating range.