TMR1212 Bi-stable TMR Bipolar Magnetic Switch with Passive Memory Effect
Part No.:TMR1212
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Supply Voltage(V):1.8~5.5 V
Power Consumption(μA):1.5μA
Operating Modes:

continuous power, no duty cycling

Sensing Direction:X-axis
Bop (Gs,25°C)(Gs):45
Brp (Gs,25°C)(Gs):-45
Output Interface:CMOS
Package:SOT23-3 TO92S
Lead Time:In stock
  • TMR1212

General DescriptionThe TMR1212 is a bi-stable 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 integrates a push-pull half-bridge TMR magnetic sensor and CMOS signal processing circuitry within the same package. Compared with conventional magnetic switch sensors, TMR1212 can detect and store the ON/OFF state triggered by magnetic polarity without power supply, and the latest state can be retrieved immediately after power supply is resumed. Designed for use in applications that are power-critical, performance-demanding, and failsafe, 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 TMR1212 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 TMR1212S), or TO-92S (P/N TMR1212T).

Features and Benefits1Tunneling Magnetoresistance (TMR) Technology;2Ultra Low Power Consumption at 1.5uA;3Passive Operation with Magnetic Memory Effect;4High Frequency Response at 1KHz;5Bipolar Latching Operation;6Compatible with a Wide Range of Supply Voltages;7Excellent Thermal Stability;8High Tolerance to External Magnetic Field Interference.

Applications:(1Utility Meters including Water, Gas, and Heat Meters2Solid State Switches3Speed Sensing4Bi-stable Level Switches in Elevator Doors;5Magnetic Flip Level Gauges6Rotary and Linear Position Sensing.

sot23-3 to92s(4x3x1.5)


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