? General Description
The OCH166A omnipolar Hall effect sensor IC is fabricated from mixed signal CMOS technology. It is comprised of one Hall plate and a CMOS output driver, mainly designed for battery-operation, hand-held equipment (such as Cellular and Cordless Phone, PAD). The total power consumption in normal operation is typically 4μW with a 1.8V power source. South poles of sufficient strength will turn the output on. The output will be turned off under no magnetic
field. While the magnetic flux density (B) is larger than operating point (BOP), the output will be turned on (low), the output is held until B is lower than release point (BRP), and then turned off.
The OCH166A is available in SOT23-3L, DFN1616-6L-EP, DFN1216-4L, DFN1616-6L and SOT553 package. Operating temperature range of the OCH166A is from -40°C to 85°C.
To minimize the BOM cost, capacitors of the MLCC type are supported, and only one external component is needed to complete the application