The A1693 is a magnetic sensor IC designed for measuring the speed and direction of rotating transmission systems. This IC can directly measure ring magnets or be back-biased with a magnet to measure ferrous targets.
The IC incorporates three Hall-effect elements that sense differentially, analog signal conditioning with dynamic gain and offset adjustment, analog-to-digital converters (ADCs), and a digital processor that applies intelligent algorithms to prevent the output from switching when the sensed target vibrates.
The A1693 output is an open collector that requires a pull-up resistor. Each time a new magnetic state is detected, the output goes low for a pulse-width time that communicates a forward-direction, reverse-direction, or non-direction.
The sensor IC is AEC-Q100 qualified for automotive applications, and is provided in a lead (Pb) free 4-pin single inline package (SIP) with 100% matte tin leadframe plating.
For applications that require an integrated magnet for gear tooth sensing, please see the ATS693. For applications that require a 2-wire speed and direction transmission sensor, please see the A19520.
