Digital hall-effect sensor ICs include built-in pull-up resistors
Honeywell Sensing and Control’s SS360PT and SS460P high sensitivity latching Hall-effect sensor ICs with built-in pull-up resistors are suitable for demanding, cost-sensitive high-volume applications, such as commuting brushless DC motors used for medical equipment and appliances as well as for flow-rate sensing, speed and RPM sensing, tachometers, counter pickups, motor and fan controls. The Hall-Effect sensors provide reliable switching points with a high magnetic sensitivity of 30 Gauss typical, at 25°C [77°F], and 55 Gauss maximum over the full -4 °C to 125 °C [-40°F to 257°F] temperature range, allowing for the use of smaller magnets or a wider air gap. These sensor ICs do not use chopper stabilization on the Hall element, providing a cleaner output signal and a faster latch response time when compared to competitive, chopper-stabilized, high sensitivity Hall-effect bipolar latching sensor ICs, according to the company. Latching magnetics make these sensors desirable for accurate speed sensing and rpm (revolutions per minute) measurement.
Honeywell Sensing and Control, sensing.honeywell.com