Specifications, Features, ApplicationsUni- and Bipolar Hall IC Switches for Magnetic Field ApplicationsFeatures· Temperature compensated magnetic performance Digital output signal For unipolar and alternating magnetic fields Large temperature range Protection against reversed polarity Output protection against electrical disturbances P-SSO-3-2TLE 4905/35/35-2/45/45-2 L (Unipolar/Bipolar Magnetic Field Switches) have been designed specifically for automotive and industrial applications. Reverse polarity protection is included on-chip as is output protection against negative voltage transients. Typical applications are position/proximity indicators, brushless DC motor commutation, rotational indexing etc.Figure 1 Pin Definitions and Functions Pin No. 2 3 Symbol Function Supply voltage Ground OutputCircuit Description The circuit includes Hall generator, amplifier and Schmitt-Trigger on one chip. The internal reference provides the supply voltage for the components. A magnetic field perpendicular to the chip surface induces a voltage at the hall probe. This voltage is amplified and switches a Schmitt-trigger with open-collector output. A protection diode against reverse power supply is integrated. The o