Littelfuse TMR Switches are digital magnetic switches that integrate tunneling magnetoresistance (TMR) and CMOS technology. This technology provides a magnetically triggered digital switch with high sensitivity, and ultralow power consumption. This Littelfuse series contains a TMR magnetic sensor and CMOS signal processing circuitry within the same package. An on-chip TMR voltage generator is also included for precise magnetic sensing. A TMR voltage amplifier and comparator plus a Schmitt trigger provide switching hysteresis for noise rejection.
5, 7, 10, 14, or 17 Gauss BOP
Ultra-Low Power Consumption: 200nA at 50 Hz response or 1.5 uA at 1 kHz response
X-axis or Z-axis sensing directions available
Unipolar, omnipolar, or bipolar (latching) operating modes
Excellent thermal stability
Open drain or push-pull output available
Utility meters, including gas, water, and heat meters
Position and speed sensing
Motor and fan control
Solid state switches
Littelfuse Portable Medical Devices & Connected Health
Products ideal for use in wearables, digital hearing aids, insulin pumps, BP monitors, and more.