ATS685LSH isHall-effect integrated circuitsThe optimized combination with rare earth magnets provides a user-friendly solution for true zero-speed digital gear tooth sensing for two-wire applications. shouldSensor ICsAvailable in a single-pulse molded plastic package that includes samarium cobalt magnets, pole pieces, and Hall-effect ICs optimized for magnetic circuits. This small package can be easily assembled and used on gears of different shapes and sizes.
The integrated circuit combines a two-element Hall-effect IC with signal processing circuitry to switch in response to differential magnetic signals generated by ferromagnetic targets. The device contains a complex compensation circuit that eliminates magnets and system biases. Digital tracking of analog signals is used for true zero-speed operation. Advanced calibration algorithms are used to adjust device gain and bias at start-up, creating air-gap-independent switching points that greatly improve output accuracy. Furthermore, the advanced algorithm reduces the undesirable effects of system anomalies, such as target vibration and sudden changes in air gap.
Adjust the current output to meet the requirements of two-wire operation. This sensor IC is ideal for obtaining edge and duty cycle information in gear tooth applications such as transmission speed.
The ATS685 is available in a lead-free (Pb) 4-pin single in-line package (SIP) with 100% matte tin leadframe plating.
- Fully optimized differential digital gear tooth sensor IC
- Run mode lock
- Unique algorithm to reduce vibration
- AGC and reference adjustment circuitry
- Air gap independent switching point
- Digital output showing gear profile
- Accurate duty cycle over the operating temperature range
- Large operating air gap range
- Fast power-up
- True zero-speed operation
- Undervoltage lockout (UVLO)
- Wide operating voltage range
- Internal current regulator with two-wire operation
- A single-chip sensing IC that enables high reliability
- Powerful test coverage using scan paths and IDDQ measurements