Description

TMR134x is an omnipolar magnetic switch integrated the tunnel magnetoresistance (TMR) magnetic sensor and open-drain 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 TMR134x 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 1 kHz. Therefore, TMR134x can provide true continuous detection of magnetic field signals, avoiding sampling errors from the traditional time-sharing power supply mode.

TMR134x 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.

TMR134x is available in two compact SOT23-3 and LGA3L (2 mm × 1.5 mm × 0.63 mm) packages.

Features and benefits

•

Tunneling magnetoresistance (TMR) technology

•

Low power consumption: supply current 1.5 μA

•

High frequency response: typ.1 kHz

•

Omnipolar operation

•

Wide range supply voltages: 1.8 V to 5.5 V

•

Open-drain 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