Description

TMR1340B 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 TMR1340B 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, TMR1340B can provide true continuous

detection of magnetic field signals, avoiding sampling

errors from the traditional time-sharing power supply

mode.

TMR1340B 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. TMR1340B is available in compact

SOT23-3 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