These parts are in production but have been determined not to fit into the new design. This classification indicates that sales of this device are currently limited to existing customer applications. For new design applications, do not purchase this device because it is likely to be obsolete soon. Samples are no longer available. Date of status change: August 14, 2014.
Recommended Alternative Products: For existing customer migration, refer to for new customers or new applicationsATS692LSHTN-RSNBL-T。
The ATS651LSH is integrated withHall-effect sensorsMechatronic components of ICs and rare earth magnets provide an easy-to-use solution for speed and direction sensing applications. The thermoset molded plastic package contains a samarium-cobalt magnet and a Hall-effect IC optimized for magnetic circuits. The device is designed for high reliability in harsh automotive environments. The IC uses a patented algorithm to meet the special operational requirements of transmission applications.
The two-wire device transmits the speed and direction of a ferromagnetic target via a pulse-width modulated (PWM) output protocol. The innovative dual differential detector scheme uses three Hall elements and two independent signal processing channels. Higher reliability than conventional designs. Because there is only one channel to control the switch, the output signal (whether the target rotates forward or backward) using the same edge of each tooth (whether the target rotates forward or backward) is used, and after the orientation change, the direction information on the first magnetic edge is used.
The biggest advantage of the ATS651LSH is that it handles vibration without degrading maximum air gap performance or generating false "direction" pulses. Even higher angular vibrations generated when the engine is started can be completely excluded. Advanced vibration sensing algorithms systematically calibrate the IC for true rotation signals of the first three half-teeth rather than vibration, thus ensuring signal accuracy in run mode at all times.
The patented operating mode also provides protection during air gap changes, regardless of whether the target is in motion or not. Advanced signal processing and innovative algorithms make the ATS651LSH ideal for a wide range of speed and direction sensing needs.
The device is Pb-free and features 100% matte tin leadframe plating.
- Rotation direction detection
- Fully optimized digital differential gear tooth sensor IC
- A single-chip sensing IC that enables high reliability
- Small mechanical dimensions (8 mm diameter × 5.5 mm vertical line, plane to plane)
- Internal current regulator for two-wire operation
- Automatic gain control (AGC) and reference adjustment circuitry
- 3-bit factory fine-tuning for tight pulse width accuracy
- True zero-speed operation
- Wide operating voltage range
- Undervoltage lockout
- Limit the power-on state
- ESD and reverse polarity protection