What the AD22150Y is and where it fits
The AD22150Y is a latching hall effect sensor from Analog Devices, polarized to respond to both North and South poles (cite:). It switches state when the magnetic field crosses the -1.2 mT trip threshold and releases at 1.2 mT, giving a clean 2.4 mT hysteresis window that rejects noise on the field (cite:). The open-collector output (cite:) means the buyer must add an external pull-up resistor to the logic supply rail — factor a 1 kΩ to 10 kΩ resistor into the BOM depending on the sink current and switching speed required.
Temperature grade and environment
Rated for -40°C to 150°C (cite:), this part suits engine-bay, industrial oven, or downhole sensor interfaces where the ambient exceeds standard commercial limits. The through-hole package (cite:) is easier to hand-solder and inspect than a surface-mount variant, which matters for low-volume or rework-heavy builds.
