TMR 1250 High-Voltage Z-Axis Bipolar Switch0 pages

TMR Z-AXIS BIPOLAR SWITCH
TMR1250
TMR1250 High-Voltage TMR Z-Axis Bipolar Switch
Features and Benefits

Applications

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Tunneling Magnetoresistance (TMR) Technology
Low Power Consumption < 1.5mA
High Frequency Response > 1kHz
Bipolar Latching Operation
Z-axis sensing direction compatible with Hall Effect
Low Switching Points for High Sensitivity
High Supply Voltage of 40V and 30V Reverse Voltage
Open Drain Output
Excellent Thermal Stability
High Tolerance to External Magnetic Field Interference

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Utility Meters including
Water, Gas, and Heat Meters
Solid State Switches
Position and Speed Sensing
Motor and Fan Control
Power Window

General Description
TMR1250 is a digital bipolar 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 half-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 40V. The TMR1250 draws only 1.5mA 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 the SOT23-3 package (P/N TMR1250S) or the
TO-92S package (P/N TMR1250T).

Block Diagram

MultiDimension Technology Co., Ltd.
Ver. 1.0a
Web: www.dowaytech.com/en, Email: info@dowaytech.com
No.7 Guangdong Road, Zhangjiagang Free Trade Zone, Jiangsu, 215634, P.R. China

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MDT TMR1250