Description | |
TMR1309 is an omnipolar magnetic switch integrated the tunnel magnetoresistance (TMR) magnetic sensor and CMOS circuitry, which is able to detect the change of magnetic field and output high and low voltage signals for high accuracy position detection. Unlike Hall/AMR sensors, TMR sensors with extremely high resistance values allows TMR1309 to achieve the supply current as low as 1.5 μA while operating in the full-time power supply mode, and maintaining the response frequency of the magnetic signal is greater than 1 kHz. Therefore, TMR1309 can provide true continuous detection of magnetic field signals, avoiding sampling errors from the traditional time-sharing power supply mode. TMR1309 allows a wide range of operating supply voltages from 1.8 V to 5.5 V with excellent temperature characteristics, and can meet the requirements of most applications. TMR1309 is available in compact SOT23-3 package. | SOT23-3 |
Features and Benefits | |
Tunneling magnetoresistance (TMR) technology | High frequency response: > 1 kHz |
Low power consumption: supply current 1.5 μA | Omnipolar operation |
Wide range supply voltages: 1.8 V to 5.5 V | CMOS push-pull output |
High sensitivity | Excellent temperature stability |
High tolerance to external magnetic field interference | RoHS & REACH compliant |
Applications | |
Utility meters: water, gas, and heat meters | Proximity switches |
Speed sensing | Linear and rotation position sensing |






SOT23-3