MultiDimension Technology Co., Ltd. MicroAmpere Unipolar Magnetic Switch Sensor TMR1148

Description TMR1148 is a unipolar magnetic switch integrated the tunneling magnetoresistance (TMR) magnetic sensor and CMOS circuitry, which is able to detect the change of magnetic field and output high and low voltage signals for high accuracy position detection. Unlike Hall/AMR sensors, TMR sensors with extremely high resistance values allows TMR1148 to achieve the supply current as low as 1.5 μA while operating in the full-time power supply mode, and maintaining the response frequency of the magnetic signal is 1 kHz. Therefore, TMR1148 can provide true continuous detection of magnetic field signals, avoiding sampling errors from the traditional time-sharing power supply mode. SOT23-3 Features and Benefits Tunneling magnetoresistance (TMR) technology High sensitivity High frequency response: typ. 1 kHz Unipolar operation Wide range supply voltages: 1.8 V to 5.5 V Open-drain output Low power consumption: supply current 1.5 μA Excellent temperature stability High tolerance to external magnetic field interference RoHS & REACH compliant Validation according to AEC-Q100 Grade1 Fulfill MSL 1 Applications Utility meters: water, gas, and heat meters Proximity switches Speed sensing Linear and rotation position sensing Wake-up switch Level switch