DRV5057/DRV5057-Q1 Linear Hall Effect Sensors Texas Instruments DRV5057/DRV5057-Q1 Linear Hall Effect Sensors respond proportionally to magnetic flux density. The device can be used for accurate position sensing in a wide range of applications. The device operates from 3.3V or 5V power supplies. When no magnetic field is present, the output produces a clock with a 50% duty cycle. The output duty cycle changes linearly with the applied magnetic flux density and four sensitivity options maximise the output dynamic range based on the required sensing range. North and south magnetic poles produce unique outputs. The typical pulse-width modulation (PWM) carrier frequency is 2kHz.