The ATS651LSH is a two-wire self-calibrating differential speed and direction sensor with vibration immunity produced by Allegro MicroSystems, Inc. It provides an easy-to-use solution for speed and direction sensing applications.
The ATS651LSH is a mechatronics component featuring an integrated Hall-effect sensor and magnet, optimized for high reliability in harsh automotive environments. It communicates speed and direction via a pulse width modulation (PWM) output protocol and includes patented algorithms to handle vibration without sacrificing air gap capability or creating erroneous pulses.
The device operates with a wide supply voltage range and features internal current regulation for 2-wire operation. It provides true zero-speed operation and includes automatic gain control and reference adjust circuits. The sensor is lead-free with a 100% matte tin plated leadframe and is available in a small 8 mm diameter x 5.5 mm vertical package.
| Supply Voltage | 4.3 - 24 V |
|---|---|
| Operating Ambient Temperature | -40°C to 150°C |
| Package Dimensions | 8 mm diameter x 5.5 mm vertical |
| Operating Signal Range | 30 - 1200 G |
| Operational Air Gap Range | 0.5 - 2.8 mm |
| Maximum Operating Frequency (Right) | 12 kHz |
It is a two-wire self-calibrating differential speed and direction sensor with vibration immunity.
No, it is self-calibrating and uses patented algorithms to calibrate on the true rotation signals from the first three and a half teeth.
Yes, it is designed specifically for high reliability in the harsh automotive environment.