The A1693 is a magnetic sensor IC designed to measure the speed and direction of a rotating gearbox system. The device can measure ring magnets directly or with the magnet reverse biased to measure ferrous targets. The sensor contains three Hall-effect elements for differential sensing. These elements include analog signal conditioning with dynamic gain and offset adjustment, an analog-to-digital converter (ADC), and a digital processor that applies intelligent algorithms to prevent output switching in the event of detected target vibration.

The A1693 output is an open collector and requires a pull-up resistor. Each time a new magnetic state is detected, the output goes low for a pulse-width time to communicate forward, reverse, or non-directional (indeterminate direction). This sensor is AEC-Q100 qualified for automotive applications and is available in a lead-free 4-pin single in-line package (SIP) with 100%_matte tin plating with lead frame plating.

characteristic

3-wire interface: VCC, GND and OUT

Measures rotation (0 kHz to 11 kHz) and provides incremental encoder output with pulse width describing the direction of rotation

Reliable handling of vibration and air gap changes

Peak detector adapts to air gap changes

Vibration detection algorithms and low-signal lockout prevent false switching in demanding transmission systems

Incremental encoding of target rotation state by generating OUT pulses

Inherent stray field immunity

Fully integrated mixed-signal architecture