TMR3004 AEC | Alldatasheet

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Technical content

Datasheet V1.0a TMR3004 TMR High Magnetic Field Dual-Axis Angle Sensor General Description The output voltages of the dual-axis TMR3004 TMR high-field angle sensor are proportional to the sine and cosine of the angle of a magnetic field applied parallel to the surface of the TMR3004.These sine and cosine signals are provided by two orthogonal full bridge TMR angle sensors. Each full bridge TMR angle sensor includes four unique high-field TMR sensor arms connected in a push-pull arrangement to produce a best-in-class peak-to-peak signal as large as 90% of the supply voltage, eliminating the need for amplification in many applications, while maintaining low error as the magnetic field is varied over a range of 1 kOe. Additionally, the TMR full bridge technology accurately compensates the output against changes in ambi ent temperature. This sensor is assembled in a compact LGA8 package of 3.0 mm × 3.0 mm × 0.9 mm. Features and Benefits  High Magnetic Field Tunneling Magnetoresistance (TMR) Technology  Wide 1 KOe Operating Range Provides Highest Air Gap Insensitivity  Excellent Immunity to Environmental Magnetic Disturbance  Large Output Signal without Amplification  High Accuracy Dual-Axis360°Angle Measurement  Compatible with Wide Range of Supply Voltages  Fast Response for High-Speed Applications  Excellent Thermal Stability  Compact LGA Package

Applications

 Rotary Position Sensors  Rotary Encoders  Contactless Potentiometers  Valve Position Sensors  Knob Position Sensors TMR3004 Operation A small dipolar magnet, placed above the TMR3004, can provide a magnetic field in any desired orientation parallel to the plane of the TMR3004 package. The ma gnetic field is detected by the TMR sensors in the TMR3004 which are comprised of two ferromagnetic layers. One layer is a “pinned layer” that is not affected by the magnetic field, and the other is “free layer,” which has a magnetization that aligns parallel to the applied magnetic field. Be cause the TMR effect produces a resistance that is proportional to the sine or cosine of the relative difference between the free and pinned layer magnetization orientations, the sensor output voltage is sinusoidally dependent on the angle of the applied magnetic field, thereby providing a true 360° measure of the orientation of the magnetic field.

Datasheet V1.0a The following chart show a typical sensor output as a function of the angle of the applied magnetic field using a 6 mm diameter, 2.5 mm thick magnet and a 1 V supply. Pinout (Bottom View) (Top view) (Bridge Schematic) Pin No. Pin Name Function

1 GNDX Ground(direction X)

2 X- Analog Differential Output 2(direction X)

3 X+ Analog Differential Output 1(direction X)

4 GNDY Ground(direction Y)

5 Y+ Analog Differential Output1(direction Y)

6 Y- Analog Differential Output2(direction Y)

7 VCCX Supply Voltage(direction X)

8 VCCY Supply Voltage(direction Y)

Datasheet V1.0a Absolute Maximum Ratings Parameter Symbol Limit Unit Supply Voltage VCC 7 V Max Exposed Field Hext 3000 Oe(1) ESD Voltage VESD 4000 V Operating Temperature TA -40~85 °C Storage Temperature Tstg -40 ~105 °C Specification (VCC=1.0V, TA=25° C, Differential Output) Parameter Symbol Conditions Min Typ Max Unit Supply Voltage VCC Operating 3.3 7 V Bridge Resistance R Operating 5.5 7.5(2) 9.5 kOhm Peak Voltage Vpeak Operating 960 mV/V Offset Voltage Voffset Angle = 0° -10 10 mV/V Magnetic Field H Operating 150 500 1100 Oe Angular Error Δα Operating ±1.5(3) ° Operation Coefficient of Peak Voltage TCVpeak TA in -40~85° C -990 PPM/° C Note: (1) 1 Oe (Oersted) = 1 Gauss in air = 0.1 millitesla = 79.8 A/m. (2) Custom sensor resistance may be available upon request. (3) Analog output accuracy can be improved by calibration.

Package Information

3± 0.1 3± 0.10.2REF 0.75±0.1 0.55±0.1 0.3±0.050.65±0.05 unit:mm

Datasheet V1.0a TMR Sensor Position 0.4±0.1 1.5±0.1 0.4±0.11.5±0.1 0.25±0.05 Top view and side view(unit: mm)

Datasheet V1.0a MultiDimension Technology Co., Ltd. Address:No.7 Guangdong Road, Zhangjiagang Free Trade Zone, Jiangsu, 215634, China Web: www.dowaytech.com/en Email: info@dowaytech.com The information provided herein by MultiDimension Technology Co., Ltd. (hereinafter MultiDimension) is believed to be accurate and reliable. Publication neither conveys nor implies any license under patent or other industrial or intellectual property rights. MultiDi mension reserves the right to make changes to product specifications for the purpose of improving product quality, reliability, and functionality. MultiDimension does not assume any liability arising out of the application and use of its products. MultiDimension ’s customers using or selling this product for use in appliances, devices, or systems where malfunction can reasonably be expected to result in personal injury do so at their own risk and agree to fully indemnify MultiDimension for any damages resulting from such applications.