TMR3001 AEC | Alldatasheet

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Technical content

Datasheet V1.0a TMR3001 TMR Dual-Axis Angle Sensor General Description The dual -axis output voltages of the TMR3001 TMR angle sensor are proportional to the sine and cosine of the angle of a magnetic field applied parallel to the surface of the sensor, which can be provided by a small magnet positioned above the device. The TMR3001 includes two Wheatstone bridges, which can be configured to output sine and cosine functions respectively. Each bridge includes four TMR sensor elements 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. Additionally, the unique TMR Wheatsto ne bridge technology accurately compensates the output against changes in ambient temperature. This sensor is assembled in a compact LGA8 package of 3.0 mm × 3.0 mm × 0.9 mm. Features and Benefits  Tunneling Magnetoresistance (TMR) Technology  Large Output Signal without Amplification  Dual-Axis 360°Angle Measurement  Compatible with wide Rang of Supply Voltages  Fast Response for High-Speed Applications  Wide Air-Gap Tolerance  Excellent Thermal Stability  Compact LGA Package

Applications

 Rotary Position Sensors  Rotary Encoders  Contactless Potentiometers  Valve Position Sensors  Knob Position Sensors TMR3001 Operation A small magnet, placed above the TMR3001, can be used to provide a magnetic field in any desired orientation parallel to the plane of the TMR3001 package. The magnetic field is detected by TMR sensors in the TMR3001 that are composed of two magnetic layers. One layer of the TMR sensors 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. Because 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 orienta tions, the sensor output voltage is sinusoidally dependent on the angle of the applied magnetic field, thereby providing a measure of the orientation of the magnet.

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 He 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 1 7 V Bridge Resistance R Operating 2.5 4.0(2) 5.5 kOhm Peak Voltage Vpeak Operating 900 mV/V Offset Voltage Voffset Angle = 0° -10 10 mV/V Magnetic Field H Operating 70 400 Oe Angular Error Δα Operating ±2.5 ° 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.

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. M ultiDimension 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. Mu ltiDimension’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.