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TA903 ... bare die, DFN and LGA6B

The TA903 consists of two Wheatstone bridges at an angle of 90° to each other. A rotating magnetic field at the sensor level supplies two sine signals with a phase shift of 90° relative to each other with a simple frequency of the magnetic field. As such, the signal information is clear across a 360° rotation of the magnetic field.

The TA903 features PerfectWave technology and delivers extremely low harmonic output signals.

Advantages

  • Absolute 360° end of shaft measurement
  • Measurement on dipole magnet
  • Very compact design (DFN8 and LGA)
  • Broad temperature and magnetic field range
  • Integrated protective diodes in DFN8 and LGA package (4 kV)

 

Product page

Product details

  • FreePitch sensor
  • Sensor resistance: 5 kOhm
  • Bridge resistance: 10 kOhm
  • Signal amplitude: 500 mV @ VCC = 5 V
  • Sensor offset: max. ±15 mV @ VCC = 5 V
  • Magnetic field range: 30 … 80 mT
  • Measurement uncertainty: 0.6° (kompensated)
  • Temperature range: -40 … +125 °C

TF952 ... as FlipChip

The TF952 is a magnetic field sensor based on the Tunnel MagnetoResistive (TMR) effect. The Sensor contains two Wheatstone bridges. This allows the measurement of two magnetic field directions (X and Y) in parallel.

The sensor is ideal for measuring magnetic fields in a linear range from -20 mT up to 20 mT. A typical application is endpoint detection of pneumatic or hydraulic cylinders.

The TF952 is available as flip-chip for SMD assembly.

Advantages

  • Intelligent end position application
  • Vehr compact design due to FlipChip package
  • Linear characteristic curve in the working range
  • Low drift behaviour over temperature

 

Product page

Product details

  • 2-axes magnetic field sensor
  • Sensitivity: 45 mV/mT
  • Sensor offset: max. ±15 mV @ VCC = 5 V
  • Linear field range: -20 … +20 mT
  • Temperature range: -40 … +125 °

TL915 ... as Bare Die

The TL915 consists of two Wheatstone bridges at an angle of 90° to each other. The sensor delivers a sine and a cosine output signal (one period ) at a north and a south pole (pole pair).

The TL915 features PerfectWave technology and delivers extremely low harmonic output signals.

TL915 als Bare Die

Advantages

  • Absolute 360° angle measurement at shaft circumference
    (nonius principle 2 codes)
  • Flat design feasible
  • High signal quality due to FixPitch-technology
  • No temperature compensation required due to low drift of
    sensor parameters

Product page

Product details

  • FixPitch sensor 5 mm
  • Pole pitch: 2.5 mm
  • Sensor resistance: 6 kOhm
  • Bridge resistance: 12 kOhm
  • Signal amplitude: 500 mV @ VCC = 5 V
  • Sensor offset: max. ±75 mV @ VCC = 5 V
  • Measurement uncertainty:  ±20 µm
  • Temperature range: -40 … +125 °C

The advantages of TMR technology Your basic module for Industry 4.0

  • High accuracy of 0.2° for TA903, or 20 µm for TL915

  • Very high temperature stability with low drift behaviour

  • Can be used in a wide range of magnetic fields

  • Small size due to compact package shapes

  • High signal quality for demanding positioning tasks

  • Different product versions for different applications and requirements

Research and funding projects

Basic projects and patent

  • TMR basic project

    Stack / Design

  • TMR Front-end modular system

    Stack / Design

  • Patent application

    "Magnetoresistive Wheatsone-Messbrücke und Winkelsensor mit zumindest zwei derartigen Messbrücken"

Publications and lectures

Further publications