The linear Hall IC TLE4998P has been designed specifically to meet the requirements of highly accurate rotation and position detection， as well as for current measurement applications. The sensor provides a digital PWM signal， which is ideally suited for direct decoding by any unit measuring a duty cycle of a rectangular signal （usually a timer/capture unit in a microcontroller）。 Furthermore， it is possible to attach an external lowpass filter， which allows an A/D conversion using the sensor supply voltage as a reference. The output stage is an open-drain driver pulling the output pad to low only. Therefore， the high level must be obtained by an external pull-up resistor. This output type has the advantage that the receiver may use even a lower supply voltage （e.g. 3.3 V）。 In this case， the pull-up resistor must be connected to the given receiver supply