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Description

The TMR3022 angle sensor is designed with two

sets of redundant Wheatstone bridge structures,

each consisting of four high-sensitivity tunneling

magnetoresistance (TMR) sensor elements, forming

two sets of half-bridge structures that separately

output SIN single-ended voltage and COS singleended voltage. The Wheatstone bridge structure of

the TMR effectively compensates for the sensor’s

temperature drift.

A magnet is placed above the TMR3022 to provide a

working magnetic field parallel to the surface of the

chip. When the magnet rotates, the chip outputs a

voltage signal that is a sine and cosine related to the

angle of the magnetic field.

The redundant design of the TMR3022 improves the

robustness of the application system. The TMR3022

achieves very low angle error when the magnetic

field is maintained within the range of within 200 Gs

to 800 Gs. The sensor is available in the TSSOP8

package.

Features and Benefits

? Tunneling magnetoresistance (TMR) technology

? Two sets of redundant SIN/COS single-ended

voltage outputs

? Wide range supply voltage

? Excellent temperature stability

? Excellent resistance to external magnetic field

interference

? Single-chip redundancy with 4 half-bridges

? AEC-Q100 under qualification

? RoHS and REACH compliant

Applications

? Absolute angle sensor

? Electric power steering motor shaft angle sensor

? Steering wheel angle sensor

? Pedal position sensor

? Throttle position sensor