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TMR4018 TMR Geartooth Sensor
  • TMR4018-big
Part No.: TMR4018
Single / Double Full: Dual
Supply Voltage (V): 0～7
TMR Element Spacing (mm): 1.8
Gear Tooth Pitch Range: optimal pitch at 3.6mm
Resistance (kΩ): 7.5
Saturation Field (Gs): ±70
Sensing Direction: X-axis
Package: LGA6L(3x6x0.9)
Lead Time: In stock

Description

The TMR4018 geartooth sensor adopts a unique push-pull Wheatstone bridge design. This design includes a single-channel or dual-channel Wheatstone full bridge composed of four or eight unshielded high-sensitivity tunneling magnetoresistance (TMR) sensing elements. The Wheatstone bridge provides a differential voltage output along the gradient of the applied magnetic field along the sensor’s sensing direction.

The dual-channel Wheatstone full bridge generates two orthogonal sine/cosine voltage output signals to measure the position of the gear rotation and detect the direction of rotation. The high-sensitivity performance of the TMR4018 enables detection of small magnetic field changes, and its output signal has good temperature stability. The TMR4018 is available in compact LGA6L (3mm × 6mm × 0.9mm) package, with 1.8 mm of TMR sensing element spacing.

LGA6LLGA6L

Features and Benefits

iconTunneling magnetoresistance (TMR) technologyiconHigh sensitivity to magnetic gradient
iconHigh saturation field allows operation in large DC magnetic fieldiconCompatible to small pitch gear measurement
iconSine/cosine signal output with accurate phase differenceiconWide air gap tolerance
iconExcellent resistance to external magnetic field interferenceiconDC (zero speed) operation
iconExcellent thermal stabilityiconCompact package
iconRoHS & REACH compliant

Applications

iconGear speed and direction measurementiconLinear and angular speed sensing
iconLinear and angular displacement sensingiconMagnetic scale
iconMagnetic encoder

The information provided herein by MultiDimension Technology Co., Ltd. (MDT) is believed to be accurate and reliable. The technology disclosed by MDT does not infringe the patents of other companies and owns independent intellectual property rights. We reserve the right to change the specification of products and/or the information given herein at any time to improve product quality, reliability and functionality. MDT does not assume any liability arising out of the application and use of its products.