The ATS622LSB is an optimized Hall-effect sensing integrated circuit and magnet combination that provides a user-friendly solution for true zero-speed digital gear-tooth sensing. The sensor module consists of a plastic shell that holds together a samarium-cobalt magnet, a pole piece, and a Hall-effect sensor 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
■ Tight timing accuracy over temperature
■ True zero-speed operation
■ Air-gap independent switch points
■ High vibration immunity
■ Extremely precise duty cycle signal with temperature
■ Large operating air gaps
■ Defined power-on state
■ Wide operating voltage range
■ Digital output representing gear profile
■ Single-chip sensing IC for high reliability
■ Small mechanical size (9 mm diameter x 7 mm length)
■ Optimized magnetic circuit
■ <200 µs power-on time
■ AGC and reference-adjust circuit
■ Under-voltage lockout

ABSOLUTE MAXIMUM RATINGS at TA = 25°C
Supply Voltage, VCC ........................ 26.5 V*
Reverse Supply Voltage, VRCC ............ -24 V
Continuous Output Current, IOUT ....... 20 mA
Reverse Output Current, IROUT .......... 50 mA
Package Power Dissipation, PD .......................................... See Graph
Operating Temperature Range, TA ............................. -40°C to +150°C*
Junction Temperature,
(continuous), TJ .......................... +165°C
(100 s), TJM ................................ +180°C
Storage Temperature, TS ................... +170°C