General Description
The TMR1302B is a digital omnipolar magnetic switch that integrates TMR and CMOS technology in order to provide a
magnetically triggered digital switch with high sensitivity, high speed, and ultra-low power consumption. It integrates a push-pull
half-bridge TMR magnetic sensor and CMOS signal processing circuitry within the same package. Designed for use in
applications that are both power-critical and performance-demanding, this device includes an on-chip TMR voltage generator for
precise magnetic sensing, TMR voltage amplifier and comparator, a Schmitt trigger to provide switching hysteresis for noise
rejection, and CMOS push-pull output. An internal band gap regulator is used to provide temperature compensated supply
voltage for internal circuits, and it allows a wide range of operating supply voltages. The TMR1302B draws only 1.5μA resulting in
ultra-low power operation, additionally it has fast response, accurate switching points, excellent thermal stability, and immunity to
stray field interference. It is available in two packaging form factors:SOT23-3 (P/N TMR1302BS), or TO-92S(P/N TMR1302BT).

Features and Benefits
 Tunneling Magnetoresistance (TMR) Technology
 Ultra Low Power Consumption at 1.5uA
 High Frequency Response at 1kHz
 Operation with North or South Pole
 Low Operate Points for High Sensitivity
 Compatible with a Wide Range of Supply Voltages
 Excellent Thermal Stability
 High Tolerance to External Magnetic Field Interference

Applications
 Utility Meters including Water, Gas, and Heat Meters
 Proximity Switches
 Speed Sensing
 Rotary and Linear Position Sensing