ATS612JSB Datasheet PDF - Allegro MicroSystems

DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR

The ATS612JSB gear-tooth sensor is a peak detecting device that uses automatic gain control to provide extremely accurate gear edge detection down to low operating speeds. Each sensor subassembly consists of a high-temperature plastic shell that holds together a samarium-cobalt magnet, a pole piece, and a differential open-collector Hall IC that has been optimized to the magnetic circuit. This small package can be easily assembled and used in conjunction with a wide variety of gear shapes and sizes.

FEATURES AND BENEFITS
■ Fully Optimized Differential Digital Gear-Tooth Sensor
■ Single-Chip Sensing IC for High Reliability
■ Digital Output Representing Target Profile
■ Extremely Low Timing Accuracy Drift with Temperature
■ Large Operating Air Gaps
■ Small Mechanical Size
■ Optimized Magnetic Circuit
■ Patented Peak-Detecting Filter:
   80 µs Typical Power-On Time
   <10 RPM Operation (single-tooth target)
   Correct First-Edge Detection
   Uses Small Value Ceramic Capacitors
■ Under-Voltage Lockout
■ Wide Operating Voltage Range
■ Defined Power-On State