TMR4M02B MULTIDIMENSION | Alldatasheet
Document overview
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Technical content
Output Voltage (V) LGA6L The TMR4M02B/3B/4B/5B/8B geartooth sensors are composed of a dual-channel push-pull Wheatstone full bridge including eight high-sensitivity tunneling magnetoresistance (TMR) sensing elements. The placement of TMR sensing elements is designed for specific gear pitches in different gear modules. The dual-channel Wheatstone full bridge outputs two orthogonal sine and cosine signals with the rotation of the gears. The period of this signal equals to the gear pitch to measure the rotation position and direction of the gear. The TMR4M02B/3B/4B/5B/8B series are available in the compact LGA6L (3 mm × 6 mm × 0.9 mm) packages, with different configurations of gear pitches in following gear modules:
- TMR4M02B: module 0.2
- TMR4M03B: module 0.3
- TMR4M04B: module 0.4
- TMR4M05B: module 0.5
- TMR4M08B: module 0.8
- Tunneling magnetoresistance (TMR) technology
- Adapt to gears of different modules
- High saturation field
- DC (zero speed) operation
- Sine/cosine signal output with accurate phase difference
- Excellent thermal stability
- Excellent resistance to external magnetic field interference
- RoHS and REACH Compliant Description Features and benefits
Applications
- Gear speed and direction measurement
- Linear and angular speed sensing
- Linear and angular displacement sensing TMR4M02B/3B/4B/5B/8B Version 2.0.1 Datasheet MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/
Part Number Gear Module Operating Ambient Temperature Package Packing Form TMR4M02BG 0.2 -40 to 125℃ LGA6L Tape & Reel TMR4M03BG 0.3 -40 to 125℃ LGA6L Tape & Reel TMR4M04BG 0.4 -40 to 125℃ LGA6L Tape & Reel TMR4M05BG 0.5 -40 to 125℃ LGA6L Tape & Reel TMR4M08BG 0.8 -40 to 125℃ LGA6L Tape & Reel MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ TMR4M02B/3B/4B/5B/8B TMR Geartooth Sensor
performance as shown in Figure 1. Figure 1. Block diagram Figure 2. Sensing direction from the two output waveforms as shown in Figure 3. Figure 3. Gear tooth rotational displacement Figure 4. Pin configuration (LGA6L)
1 V1- Phase A negative output
2 V1+ Phase A positive output
3 VCC Power supply
4 V2+ Phase B positive output
5 V2- Phase B negative output
6 GND Ground
MultiDimension Technology Co., Ltd.
- Absolute Maximum Ratings Parameters Symbol Min. Max. Unit Supply voltage VCC -7 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 5. Electrical Specifications VCC = 5 V, TA = 25 °C, a 0.1 μF capacitor is connected between VCC and GND Parameter Symbol Condition Min. Typ. Max. Unit Supply voltage VCC operating - 3 7 V Bridge resistance RB - - 2 - kΩ Resistance temperature coefficient TCRB B = 0 Gs - -0.10 - %/°C Offset VOFFSET - -20 - 20 mV/V Notes: 1) 1 Oe (Oersted) = 1 Gauss in air = 0.1 millitesla = 79.8 A/m. 2) Bridge resistance (resistance between V CC and GND at zero field) can be custom designed. Please contact MultiDimension Technology for details. MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ TMR4M02B/3B/4B/5B/8B TMR Geartooth Sensor
Figure 5. Package outline of LGA6L (unit: mm) MultiDimension Technology Co., Ltd.
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