Description
TMR1157 is a digital unipolar 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 is designed for use in applications that are both power-critical and performance-demandin
g. It contains a push-pull full-bridge TMR magnetic sensor 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 CMOS push-pull 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 up to 40 V. The TMR1157 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. TMR1157 is available in two compact SOT23-3 and TO92S packages.
SOT23-3 TO92S
Features and Benefits
Tunneling magnetoresistance (TMR) technology Low power consumption < 0.6 mA High frequency response > 1 kHz Unipolar latching operation Z-axis sensing direction compatible with hall effect Open drain output High supply voltage of 40 V and 30 V reverse voltage Excellent temperature stability High tolerance to external magnetic field interference RoHS & REACH compliant
Applications
Utility meters: water, gas, and heat meters Solid state switches Position and speed sensing Motor and fan control Power window
Description
TMR1157 is a digital unipolar 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 is designed for use in applications that are both power-critical and performance-demanding. It contains a push-pull full-bridge TMR magnetic sensor 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 CMOS push-pull 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 up to 40 V. The TMR1157 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. TMR1157 is available in two compact SOT23-3 and TO92S packages.
SOT23-3 TO92S
Features and Benefits
Tunneling magnetoresistance (TMR) technology Low power consumption < 0.6 mA
High frequency response > 1 kHz Unipolar latching operation
Z-axis sensing direction compatible with hall effect Open drain output
High supply voltage of 40 V and 30 V reverse voltage Excellent temperature stability
High tolerance to external magnetic field interference RoHS & REACH compliant
Applications
Utility meters: water, gas, and heat meters Solid state switches
Position and speed sensing Motor and fan control
Power window
