A1693

A1693 Vibration-Tolerant Hall-Effect Transmission Speed and Direction Sensor IC FEATURES AND BENEFITS Differential Hall-effect sensor IC measures ring magnets and ferrous targets with inherent stray field immunity Vibration detection algorithms prevent false switching and provide low-signal lockout Large operating air gap with independent switch points Three-wire pulse-width output protocol describes speed and direction Wide operating voltage and integrated protection circuits AEC-Q100 Grade 0 qualified for an ambient operating temperature range of –40°C to 150°C PACKAGE: 4-PIN SIP (SUFFIX K) DESCRIPTION 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 forwarddirection, 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 ...