TMR4001 MULTIDIMENSION | Alldatasheet
Document overview
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Technical content
The TMR40xx series of 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 TMR40xx series enables detection of small magnetic field changes, and its output signal has good temperature stability. The TMR40xx series is available in two compact LGA6L(3 mm × 3 mm × 0.9 mm) and LGA6L (3 mm × 6 mm × 0.9 mm) packages, with multiple configuration of TMR sensing element spacing:
- TMR4001: 0.25 mm • TMR4002: 0.5 mm
- TMR4003: 0.75 mm • TMR4004: 0.5 mm
- TMR4005: 1.0 mm • TMR4006: 2.0 mm
- TMR4007: 3.0 mm • TMR4011: 0.4 mm
- TMR4012: 0.6 mm • TMR4013: 0.8 mm
- TMR4015: 1.2 mm • TMR4016: 1.4 mm
- TMR4017: 1.6 mm • TMR4018: 1.8 mm
- TMR4019: 2.4 mm
- Tunneling magnetoresistance (TMR) technology
- High saturation field allows operation in large DC magnetic field
- High sensitivity to magnetic gradient
- Compatible to small pitch gear measurement
- Sine/cosine signal output with accurate phase difference
- Excellent resistance to external magnetic field interference
- Wide air gap tolerance
- DC (zero speed) operation
- Excellent thermal stability
- Compact package
- RoHS and REACH compliant
- Gear speed and direction measurement
- Linear and angular speed sensing
- Linear and angular displacement sensing
- Magnetic scale
- Magnetic encoder TMR Geartooth Sensor Description Features and benefits
Applications
LGA6L (3×3×0.9) LGA6L (3×6×0.9) Datasheet MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ Version 2.0.1
Part Number Bridge Channel TMR Element Spacing (d) Gear Pitch (D) Package Packing Form TMR4001 Single 0.25 mm 0.5 mm LGA6L (3×3×0.9) Tape & Reel TMR4002 Single 0.5 mm 1.0 mm LGA6L (3×3×0.9) Tape & Reel TMR4003 Single 0.75 mm 1.5 mm LGA6L (3×3×0.9) Tape & Reel TMR4004 Dual 0.5 mm 1.0 mm LGA6L (3×3×0.9) Tape & Reel TMR4005 Dual 1.0 mm 2.0 mm LGA6L (3×3×0.9) Tape & Reel TMR4006 Dual 2.0 mm 4.0 mm LGA6L (3×6×0.9) Tape & Reel TMR4007 Dual 3.0 mm 6.0 mm LGA6L (3×6×0.9) Tape & Reel TMR4011 Dual 0.4 mm 0.8 mm LGA6L (3×3×0.9) Tape & Reel TMR4012 Dual 0.6 mm 1.2 mm LGA6L (3×3×0.9) Tape & Reel TMR4013 Dual 0.8 mm 1.6 mm LGA6L (3×3×0.9) Tape & Reel TMR4015 Dual 1.2 mm 2.4 mm LGA6L (3×6×0.9) Tape & Reel TMR4016 Dual 1.4 mm 2.8 mm LGA6L (3×6×0.9) Tape & Reel TMR4017 Dual 1.6 mm 3.2 mm LGA6L (3×6×0.9) Tape & Reel TMR4018 Dual 1.8 mm 3.6 mm LGA6L (3×6×0.9) Tape & Reel TMR4019 Dual 2.4 mm 4.8 mm LGA6L (3×6×0.9) Tape & Reel Catalogue MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ TMR40xx TMR Geartooth Sensor
- Absolute Maximum Ratings Parameters Symbol Min. Max. Unit Supply voltage VCC - 7 V Reverse supply voltage VRCC - 7 V Magnetic flux density B - 1500 Gs ESD performance (HBM) VESD - 4000 V Operating ambient temperature TA -40 125 °C Storage ambient temperature TSTG -50 150 °C 6. Electrical Specifications VCC = 3 V, TA = 25 °C, differential output Parameter Symbol Condition Min. Typ. Max. Unit Applicable Part Number Supply voltage VCC operating - 3 7 V All parts Single bridge Bridge resistance RB B = 0 Gs - 9 - kΩ TMR4001 to TMR4003 Dual bridge Bridge resistance - 4.5 - kΩ TMR4004 to TMR4019 Saturation magnetic field HSAT - - ±70 - Gs All parts Non-linearity of resistance NONLR fit in ±15 Gs - 5 - %FS All parts Offset VOFFSET - -20 - 20 mV/V TMR4001 to TMR4005 - -35 - 35 TMR4006 to TMR4017 - -50 - 50 TMR4018 to TMR4019 Hysteresis HYS sweep in ±20 Gs - 1 - %FS All parts Typical differential output VOUT_TYP - - 650 - mV/V All parts Resistance temperature coefficient TCRB B = 0 Gs - -0.10 - %/°C All parts Sensitivity temperature coefficient TCS - - -0.18 - %/°C All parts Notes: 1) Bridge resistance (resistance between V CC and GND) is can be custom designed. Please contact MultiDimension Technology for details. 2) Sensor may saturate beyond the range of this magnetic field. Saturation magnetic field can be custom designed. Please contact MultiDimension Technology for details. MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ TMR40xx TMR Geartooth Sensor
Figure 5. LGA6L (3×3×0.9) Package Drawing (unit: mm) MultiDimension Technology Co., Ltd.
Figure 6. LGA6L (3×6×0.9) Package Drawing (unit: mm) MultiDimension Technology Co., Ltd.
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