Description
TMR1387 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 low power consumption. It is designed for use in applications that are both power-critical and performance-demandin
g. It contains a push-pull TMR sensor bridge and CMOS signal processing circuitry within the same package, including an on-chip TMR voltage generator for precise magnetic sensing, a TMR voltage amplifier and comparator plus a schmitt trigger to provide switching hysteresis for noise rejection, and an open-drain output. An internal band gap regulator is used to provide a temperature compensated supply voltage for internal circuits, permitting a wide range of supply voltages from 3 V up to 40 V. The TMR1387 draws only 0.6 mA resulting in low-power operation. It has fast response, accurate switching points, excellent thermal stability, and immunity to stray field interference. It is available in SOT23-3 package.
SOT23-3
Features and Benefits
Tunneling magnetoresistance (TMR) technology Low power consumption < 0.6 mA High frequency response ≥ 100 kHz Omnipolar operation In-plane X-Axis sensing Open-drain output High supply voltages of 40 V and 30 V reverse voltage High sensitivity High tolerance to external magnetic field interference Excellent temperature stability RoHS & REACH compliant
Applications
Utility meters: water, gas, and heat meters Proximity switches Speed sensing Position sensing Motor and fan control Power window
Description
TMR1387 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 low power consumption. It is designed for use in applications that are both power-critical and performance-demanding. It contains a push-pull TMR sensor bridge and CMOS signal processing circuitry within the same package, including an on-chip TMR voltage generator for precise magnetic sensing, a TMR voltage amplifier and comparator plus a schmitt trigger to provide switching hysteresis for noise rejection, and an open-drain output. An internal band gap regulator is used to provide a temperature compensated supply voltage for internal circuits, permitting a wide range of supply voltages from 3 V up to 40 V. The TMR1387 draws only 0.6 mA resulting in low-power operation. It has fast response, accurate switching points, excellent thermal stability, and immunity to stray field interference. It is available in SOT23-3 package.
SOT23-3
Features and Benefits
Tunneling magnetoresistance (TMR) technology Low power consumption < 0.6 mA
High frequency response ≥ 100 kHz Omnipolar operation
In-plane X-Axis sensing Open-drain output
High supply voltages of 40 V and 30 V reverse voltage High sensitivity
High tolerance to external magnetic field interference Excellent temperature stability
RoHS & REACH compliant
Applications
Utility meters: water, gas, and heat meters Proximity switches
Speed sensing Position sensing
Motor and fan control Power window
