TMR1304 Ultra-Low Power Omnipolar Switch0 pages

TMR OMNIPOLAR SWITCH
TMR1304
TMR1304 Ultra-Low Power TMR Omnipolar Switch
Features and Benefits

Applications

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

Utility Meters including
Water, Gas, and Heat Meters
Proximity Switches
Position and Speed Sensing
Motor and Fan Control

General Description
TMR1304 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 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. The TMR1304 draws only 1.5μA resulting in ultra-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.

Block Diagram

MultiDimension Technology Co., Ltd.
Ver. 1.0
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 TMR1304