Gear-Tooth Hall-Effect Speed Sensor ICs

The gear-tooth sensor ICs are smart sensor ICs that learn about their targets to optimize the magnetic circuit detection. Each module combines in a compact high-temperature plastic package: a samarium-cobalt magnet, a pole piece, and a differential Hall-effect IC that has learning capability. These sensor ICs can be easily used in conjunction with a wide variety of gear or target shapes and sizes.

Gear-Tooth Hall-Effect Speed Sensor ICs
Part Number	Supply Voltage (V)	Output Type	Power-On State	Specified Air Gap Range (>20 Hz)	Key Spec (see datasheet for details)	Minimum Speed	Applications	Temperature Ranges	Packages
ATS616	3.5 to 24	3-wire	High (off)	0.4 to 2.5 mm	Timing accuracy	10 Hz	Camshaft and Crankshaft	L	SG
ATS617	4.5 to 24	3-wire	High (off)	0.4 to 2.5 mm	Timing accuracy	10 Hz	Camshaft	L	SG
ATS625	4 to 24	3-wire	High (off)	0.5 to 2.5 mm	Repeatability	Zero speed	Crankshaft	L	SG
ATS635	4.2 to 24	3-wire	Low (off)	2.5 mm max	User programmable switch point	Zero speed	Coarse	L	SE
ATS636	4.2 to 24	3-wire	High (off)	2.5 mm max	User programmable switch point	Zero speed	Coarse	L	SE
ATS642	4 to 24	2-wire	High (current)	0.5 to 2.75 mm	Duty cycle	Zero speed	ABS	L	SH
ATS643	4 to 24	2-wire	High (current)	0.5 to 2.5 mm	Duty cycle	Zero speed	Transmission	L	SH
ATS667	4 to 24	3-wire	High (off)	0.5 to 2.5 mm	Duty cycle	Zero speed	Transmission	L	SG
ATS675	3.3 to 26.5	3-wire	TPO	0.5 to 2.5 mm	Timing accuracy	Zero speed	Camshaft	L	SE
ATS682	4 to 18	2-wire	High (current)	0.5 to 2.75 mm	Duty cycle	Zero speed	ABS	L	SH
Temperature range codes: S = -20°C to 85°C, E = -40°C to 85°C, K = -40°C to 125°C, L = -40°C to 150°C

Also see: A1642 Two-Wire True Zero-Speed Miniature Differential Peak-Detecting Sensor with Continuous Calibration