The ATS688LSN is an optimized Hall-effect integrated circuit (IC), rare-earth pellet, and high-temperature ceramic capacitor in a single overmolded package, reducing the need for external EMC protection. The ATS688LSN provides a user-friendly solution for true zero-speed digital gear tooth sensing in two-wire applications.
The single integrated circuit incorporates a dual element Hall-effect sensor IC and signal processing circuitry that switches in response to differential magnetic signals created by a rotating ferromagnetic target. The device contains a sophisticated compensating circuit to eliminate magnetic and system offsets. Digital tracking of the analog signal is used to achieve true zero-speed operation.Advanced calibration algorithms are used to adjust the device gain and offset at power-up, resulting in air gap independent switchpoints, which greatly improves output accuracy and mitigates the effect of system anomalies such as target vibration and sudden changes in air gap.
The regulated current output is configured for two-wire operation. This sensor IC is ideal for obtaining edge and duty cycle information in gear-tooth–based applications such as wheel speed.
The ATS688LSN is provided in a lead (Pb) free 3-pin backbiased SIP package (suffix SN) with tin leadframe plating. The ATS688LSN provides a user-friendly solution for true zero-speed digital gear tooth sensing in two-wire applications, such as automotive or two-wheeler braking systems.