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