The A1172 integrated circuit is an ultra sensitive, Hall-effect switch with latched digital outputs and omnipolar magnetic actuation. It features operation at low supply currents and voltages, making it ideal for battery-operated electronics. The low operating supply voltage, 1.65 V to 3.5 V, and unique clocking algorithm assist in reducing the average operating power consumption. For example, the power requirements are less than 15mW with a 2.75 V supply.

Unlike many Hall-effect switches, both north and south polarity magnetic fields of  ufficient strength activate output switching, to either off or on. Additionally, the A1172, available in a fourpin wafer level chip scale package, provides two push-pull outputs. These outputs are configured such that one output switches off in the absence of sufficient magnetic field while the other output switches on in the absence of a magnetic field. This polarity-independence, as well as the minimal power requirements, allows the A1172 to easily replace reed switches, providing superior reliability and ease of manufacturing while eliminating the requirement for signal conditioning.