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DatasheetV1.0a TMR401X TMR Gear tooth sensor with high sensitivity to magnetic field gradient General Description The TMR40 1X magnetic gear tooth sensors utilize a unique push -pull Wheatstone bridge design, including one or two Wheatstone full bridges, with four or eight unshielded high sensitivity TMR sensing elements. The Wheatstone bridge creates a differential voltage output with respect to the magnetic field gradient along the sensor’s sen sitive direction. In the dual -bridge configuration, the two orthogonal Wheatstone full bridges provide sine and cosine voltage signals that can be used to measure both the gear tooth position and the direction of motion. The TMR401X magnetic gear tooth sensors offer superior performance with high sensitivity to the magnetic field gradient. They can detect very small changes in magnetic field, along with good temperature stability of the output signal. The TMR401X magnetic gear tooth sensors are available in 8 different standard spacings of 0. 4mm, 0.6mm, 0.8mm, 1.0mm, 3mm × 3mm × 0.9mm, 3mm × 6mm × 0.9mm. Features and Benefits  Tunneling Magnetoresistance (TMR) Technology  High Saturation Point Allowing Operation under Large DC Magnetic Field  Wide Air-Gap Tolerance  High Sensitivity to Magnetic Field Gradient  Capable of Small-Pitch Gear Tooth Detection  DC(Zero-Speed) Operation  Sine/Cosine Signal Outputs with Precise Phase Shift  Excellent Thermal Stability  Good Immunity to Environmental Magnetic Field  Compact Ultra-Thin Package

Applications

 Gear Tooth Motion, Speed, and Direction Sensing  Linear and Rotary Speed Sensing  Linear and Rotary position Sensing  Linear Magnetic Scales  Magnetic Encoders TMR400X

DatasheetV1.0a Wheatstone Bridge Connection Dual-Bridge Configuration Pin Configuration Direction of Sensitivity Dual-Bridge LGA6L (3x3) （Bottom View） （Top View） TMR4011 TMR4012 TMR4013 Direction of Sensitivity Dual-Bridge LGA6L (3x6) LGA6L (3x6) （Bottom View） （Top View） View) TMR4014 TMR4018

DatasheetV1.0a Pin No. Pin Name Pin Function

1 V1- Differential Output (-) of Bridge 1

2 V2- * Differential Output (-) of Bridge 2 *

3 GND Ground

4 V2+ * Differential Output (+) of Bridge 2 *

5 V1+ Differential Output (-) of Bridge 1

6 VCC Supply Voltage

Parameter Symbol Limit Unit Supply Voltage VCC 7 V Reverse Supply Voltage VRcc 7 V Magnetic Field H 1500 Oe (1) ESD Voltage VESD 4000 V Operating Temperature TA -40 ~ 125 °C Storage Temperature Tstg -50 ~150 °C Specification (VCC=1.0V,TA=25° C,Differential Output) Parameter Symbol Conditions Min Typ Max Unit Supply Voltage VCC Operating 1 7 V Supply Current ICC Output Open 67(2) μA Bridge Resistance R 15(3) kOhm Single Resistor Sensitivity SEN - 0.46 %ΔR/Oe Saturation Field Hsat ±70 (4) Oe Linear Range 1 LIN1 Linearity ≥ 98% ±20 Oe Linear Range 2 LIN2 Linearity ≥ 95% ±40 Oe Offset Voltage Voffset -20 20 mV/V Hysteresis Hys Fit @± 20 Oe 1 %FS Maximum Differential Voltage Output VoutMax 650 mV/V Temperature Coefficient of Resistance TCR H = 0 Oe -985 PPM/° C Temperature Coefficient of Sensitivity TCS -1800 PPM/° C Note: (1) 1 Oe (Oersted) = 1 Gauss in air = 0.1 millitesla = 79.8 A/m. (2)Supply current is determined by the resistance of the sensor. (3)Custom sensor resistance may be available upon request. (4)The sensors may saturate if the magnetic field exceeds this range. Saturation field can be custom designed to meet special requirements.

DatasheetV1.0a TMR Element Layout Part Number Single/ Dual Bridge TMR Element Spacing (mm) (TMR elements are placed symmetrially with respect to the center of the package, which is marked by the “+”symbol.) Approx. Gear Tooth Pitch Range Package Format TMR4011 Dual optimal pitch at0.8mm LGA6L (3x3) TMR4012 Dual optimal pitch at 1.2mm LGA6L (3x3) TMR4013 Dual optimal pitch at1.6mm LGA6L (3x3) TMR4014 Dual optimal pitch at2.0mm LGA6L (3x6) TMR4015 Dual optimal pitch at2.4mm LGA6L (3x6) TMR4016 Dual optimal pitch at2.8mm LGA6L (3x6) TMR4017 Dual optimal pitch at3.2mm LGA6L (3x6) TMR4018 Dual optimal pitch at3.6mm LGA6L (3x6)

DatasheetV1.0a

Package Information

LGA6L (3x3) package drawing: Unit: mm LGA6L (3x6) package drawing: Unit: mm

DatasheetV1.0a TMR Sensor Position LGA6L (3x3)LGA6L (3x6) Top view and side view(unit: mm) 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. MultiDimensionreserves the right to make changes to product specifications for the purpose of improving product quality, reliability, and functionality. MultiDimensiondoes 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 MultiDimensionfor any damages resulting from such applications.